| nr |
titel |
type |
| 1 |
International journal of coal geology, vol. 1, no. 1 (1980)
|
aflevering
|
| 2 |
International journal of coal geology, vol. 10, no. 1 (1988)
|
aflevering
|
| 3 |
International journal of coal geology, vol. 3, no. 1 (1983)
|
aflevering
|
| 4 |
International journal of coal geology, vol. 15, no. 1 (1990)
|
aflevering
|
| 5 |
International journal of coal geology, vol. 7, no. 1 (1987)
|
aflevering
|
| 6 |
International journal of coal geology, vol. 9, no. 1 (1987)
|
aflevering
|
| 7 |
International journal of coal geology, vol. 85, no. 1 (2011-01-01)
|
aflevering
|
| 8 |
International journal of coal geology, vol. 87, no. 1 (2011-07-01)
|
aflevering
|
| 9 |
International journal of coal geology, vol. 83, no. 1 (2010-07-01)
|
aflevering
|
| 10 |
International journal of coal geology, vol. 86, no. 1 (2011-04-01)
|
aflevering
|
| 11 |
International journal of coal geology, vol. 84, no. 1 (2010-10-01)
|
aflevering
|
| 12 |
International journal of coal geology, vol. 3, no. 1 (1983-08)
|
aflevering
|
| 13 |
International journal of coal geology, vol. 88, no. 1 (2011-10-01)
|
aflevering
|
| 14 |
International journal of coal geology, vol. 73, no. 1 (2008-01-07)
|
aflevering
|
| 15 |
International journal of coal geology, vol. 83, no. 1 (2010)
|
aflevering
|
| 16 |
International journal of coal geology, vol. 84, no. 1 (2010)
|
aflevering
|
| 17 |
International journal of coal geology, vol. 81, no. 1 (2010)
|
aflevering
|
| 18 |
International journal of coal geology, vol. 47, no. 1 (2001)
|
aflevering
|
| 19 |
International journal of coal geology, vol. 53, no. 1 (2002)
|
aflevering
|
| 20 |
International journal of coal geology, vol. 55, no. 1 (2003)
|
aflevering
|
| 21 |
International journal of coal geology, vol. 51, no. 1 (2002)
|
aflevering
|
| 22 |
International journal of coal geology, vol. 49, no. 1 (2002)
|
aflevering
|
| 23 |
International journal of coal geology, vol. 45, no. 1 (2000)
|
aflevering
|
| 24 |
International journal of coal geology, vol. 46, no. 1 (2001)
|
aflevering
|
| 25 |
International journal of coal geology, vol. 44, no. 1 (2000)
|
aflevering
|
| 26 |
International journal of coal geology, vol. 33, no. 1 (1997)
|
aflevering
|
| 27 |
International journal of coal geology, vol. 42, no. 1 (1999)
|
aflevering
|
| 28 |
International journal of coal geology, vol. 40, no. 1 (1999)
|
aflevering
|
| 29 |
International journal of coal geology, vol. 27, no. 1 (1995)
|
aflevering
|
| 30 |
International journal of coal geology, vol. 75, no. 1 (2008)
|
aflevering
|
| 31 |
International journal of coal geology, vol. 57, no. 1 (2004)
|
aflevering
|
| 32 |
International journal of coal geology, vol. 60, no. 1 (2004)
|
aflevering
|
| 33 |
International journal of coal geology, vol. 71, no. 1 (2007)
|
aflevering
|
| 34 |
International journal of coal geology, vol. 72, no. 1 (2007)
|
aflevering
|
| 35 |
International journal of coal geology, vol. 78, no. 1 (2009)
|
aflevering
|
| 36 |
International journal of coal geology, vol. 80, no. 1 (2009)
|
aflevering
|
| 37 |
International journal of coal geology, vol. 73, no. 1 (2008)
|
aflevering
|
| 38 |
International journal of coal geology, vol. 74, no. 1 (2008)
|
aflevering
|
| 39 |
International journal of coal geology, vol. 85, no. 1 (2011)
|
aflevering
|
| 40 |
International journal of coal geology, vol. 86, no. 1 (2011)
|
aflevering
|
| 41 |
International journal of coal geology, vol. 88, no. 1 (2011)
|
aflevering
|
| 42 |
International journal of coal geology, vol. 87, no. 1 (2011)
|
aflevering
|
| 43 |
International journal of coal geology, vol. 6, no. 1 (1986-04)
|
aflevering
|
| 44 |
International journal of coal geology, vol. 22, no. 1 (1993-02)
|
aflevering
|
| 45 |
International journal of coal geology, vol. 17, no. 1 (1991-02)
|
aflevering
|
| 46 |
International journal of coal geology, vol. 25, no. 1 (1994-01)
|
aflevering
|
| 47 |
International journal of coal geology, vol. 11, no. 1 (1989-02)
|
aflevering
|
| 48 |
International journal of coal geology, vol. 75, no. 1 (2008-06-13)
|
aflevering
|
| 49 |
International journal of coal geology, vol. 9, no. 1 (1987-11)
|
aflevering
|
| 50 |
International journal of coal geology, vol. 17, no. 1 (1991)
|
aflevering
|
| 51 |
International journal of coal geology, vol. 22, no. 1 (1993)
|
aflevering
|
| 52 |
International journal of coal geology, vol. 25, no. 1 (1994)
|
aflevering
|
| 53 |
International journal of coal geology, vol. 28, no. 1 (1995)
|
aflevering
|
| 54 |
International journal of coal geology, vol. 4, no. 1 (1984)
|
aflevering
|
| 55 |
International journal of coal geology, vol. 11, no. 1 (1989)
|
aflevering
|
| 56 |
International journal of coal geology, vol. 6, no. 1 (1986)
|
aflevering
|
| 57 |
International journal of coal geology, vol. 2, no. 1 (1982)
|
aflevering
|
| 58 |
International journal of coal geology, vol. 55, no. 1 (2003-06)
|
aflevering
|
| 59 |
International journal of coal geology, vol. 57, no. 1 (2004-01-15)
|
aflevering
|
| 60 |
International Journal of Coal Geology, vol. 33, no. 1 (1997-01)
|
aflevering
|
| 61 |
International Journal of Coal Geology, vol. 28, no. 1 (1995-10)
|
aflevering
|
| 62 |
International Journal of Coal Geology, vol. 45, no. 1 (2000-11)
|
aflevering
|
| 63 |
International Journal of Coal Geology, vol. 47, no. 1 (2001-06)
|
aflevering
|
| 64 |
International journal of coal geology, vol. 60, no. 1 (2004-10-22)
|
aflevering
|
| 65 |
International Journal of Coal Geology, vol. 42, no. 1 (1999-12)
|
aflevering
|
| 66 |
International Journal of Coal Geology, vol. 46, no. 1 (2001-03)
|
aflevering
|
| 67 |
International Journal of Coal Geology, vol. 44, no. 1 (2000-07)
|
aflevering
|
| 68 |
International journal of coal geology, vol. 49, no. 1 (2002-02)
|
aflevering
|
| 69 |
International journal of coal geology, vol. 51, no. 1 (2002-06)
|
aflevering
|
| 70 |
International journal of coal geology, vol. 53, no. 1 (2002-12)
|
aflevering
|
| 71 |
International journal of coal geology, vol. 11, no. 1 (1989-02)
|
aflevering
|
| 72 |
International journal of coal geology, vol. 22, no. 1 (1993-02)
|
aflevering
|
| 73 |
International journal of coal geology, vol. 4, no. 1 (1984-07)
|
aflevering
|
| 74 |
International journal of coal geology, vol. 15, no. 1 (1990-05)
|
aflevering
|
| 75 |
International journal of coal geology, vol. 9, no. 1 (1987-11)
|
aflevering
|
| 76 |
International journal of coal geology, vol. 3, no. 1 (1983-08)
|
aflevering
|
| 77 |
International journal of coal geology, vol. 1, no. 1 (1980-10)
|
aflevering
|
| 78 |
International journal of coal geology, vol. 7, no. 1 (1987-01)
|
aflevering
|
| 79 |
International journal of coal geology, vol. 17, no. 1 (1991-02)
|
aflevering
|
| 80 |
International journal of coal geology, vol. 10, no. 1 (1988-07)
|
aflevering
|
| 81 |
International journal of coal geology, vol. 25, no. 1 (1994-01)
|
aflevering
|
| 82 |
International journal of coal geology, vol. 2, no. 1 (1982-06)
|
aflevering
|
| 83 |
International journal of coal geology, vol. 2, no. 1 (1982-06)
|
aflevering
|
| 84 |
International journal of coal geology, vol. 1, no. 1 (1980-10)
|
aflevering
|
| 85 |
International journal of coal geology, vol. 15, no. 1 (1990-05)
|
aflevering
|
| 86 |
International journal of coal geology, vol. 4, no. 1 (1984-07)
|
aflevering
|
| 87 |
International journal of coal geology, vol. 74, no. 1 (2008-03-03)
|
aflevering
|
| 88 |
International journal of coal geology, vol. 10, no. 1 (1988-07)
|
aflevering
|
| 89 |
International journal of coal geology, vol. 7, no. 1 (1987-01)
|
aflevering
|
| 90 |
International journal of coal geology, vol. 81, no. 1 (2010-01-07)
|
aflevering
|
| 91 |
International journal of coal geology, vol. 80, no. 1 (2009-10-01)
|
aflevering
|
| 92 |
International journal of coal geology, vol. 78, no. 1 (2009-03-01)
|
aflevering
|
| 93 |
International journal of coal geology, vol. 6, no. 1 (1986-04)
|
aflevering
|
| 94 |
International journal of coal geology, vol. 71, no. 1 (2007-06-01)
|
aflevering
|
| 95 |
International journal of coal geology, vol. 72, no. 1 (2007-09-03)
|
aflevering
|
| 96 |
International journal of coal geology, vol. 5, no. 1-2 (1985)
|
aflevering
|
| 97 |
International journal of coal geology, vol. 8, no. 1-2 (1987)
|
aflevering
|
| 98 |
International journal of coal geology, vol. 82, no. 1-2 (2010)
|
aflevering
|
| 99 |
International journal of coal geology, vol. 54, no. 1-2 (2003)
|
aflevering
|
| 100 |
International journal of coal geology, vol. 30, no. 1-2 (1996)
|
aflevering
|
| 101 |
International journal of coal geology, vol. 48, no. 1-2 (2001)
|
aflevering
|
| 102 |
International journal of coal geology, vol. 41, no. 1-2 (1999)
|
aflevering
|
| 103 |
International journal of coal geology, vol. 34, no. 1-2 (1997)
|
aflevering
|
| 104 |
International journal of coal geology, vol. 37, no. 1-2 (1998)
|
aflevering
|
| 105 |
International journal of coal geology, vol. 38, no. 1-2 (1998)
|
aflevering
|
| 106 |
International journal of coal geology, vol. 36, no. 1-2 (1998)
|
aflevering
|
| 107 |
International journal of coal geology, vol. 77, no. 1-2 (2009)
|
aflevering
|
| 108 |
International journal of coal geology, vol. 65, no. 1-2 (2006)
|
aflevering
|
| 109 |
International journal of coal geology, vol. 66, no. 1-2 (2006)
|
aflevering
|
| 110 |
International journal of coal geology, vol. 67, no. 1-2 (2006)
|
aflevering
|
| 111 |
International journal of coal geology, vol. 61, no. 1-2 (2005)
|
aflevering
|
| 112 |
International journal of coal geology, vol. 63, no. 1-2 (2005)
|
aflevering
|
| 113 |
International journal of coal geology, vol. 62, no. 1-2 (2005)
|
aflevering
|
| 114 |
International journal of coal geology, vol. 64, no. 1-2 (2005)
|
aflevering
|
| 115 |
International journal of coal geology, vol. 59, no. 1-2 (2004)
|
aflevering
|
| 116 |
International journal of coal geology, vol. 58, no. 1-2 (2004)
|
aflevering
|
| 117 |
International journal of coal geology, vol. 69, no. 1-2 (2007)
|
aflevering
|
| 118 |
International journal of coal geology, vol. 79, no. 1-2 (2009)
|
aflevering
|
| 119 |
International journal of coal geology, vol. 76, no. 1-2 (2008)
|
aflevering
|
| 120 |
International journal of coal geology, vol. 68, no. 1-2 (2006)
|
aflevering
|
| 121 |
International journal of coal geology, vol. 56, no. 1-2 (2003)
|
aflevering
|
| 122 |
International journal of coal geology, vol. 8, no. 1-2 (1987-06)
|
aflevering
|
| 123 |
International journal of coal geology, vol. 26, no. 1-2 (1994-07)
|
aflevering
|
| 124 |
International journal of coal geology, vol. 77, no. 1-2 (2009-01-07)
|
aflevering
|
| 125 |
International journal of coal geology, vol. 20, no. 1-2 (1992)
|
aflevering
|
| 126 |
International journal of coal geology, vol. 21, no. 1-2 (1992)
|
aflevering
|
| 127 |
International journal of coal geology, vol. 18, no. 1-2 (1991)
|
aflevering
|
| 128 |
International journal of coal geology, vol. 26, no. 1-2 (1994)
|
aflevering
|
| 129 |
International journal of coal geology, vol. 14, no. 1-2 (1989)
|
aflevering
|
| 130 |
International journal of coal geology, vol. 56, no. 1-2 (2003-11)
|
aflevering
|
| 131 |
International journal of coal geology, vol. 58, no. 1-2 (2004-04-23)
|
aflevering
|
| 132 |
International journal of coal geology, vol. 64, no. 1-2 (2005-10-17)
|
aflevering
|
| 133 |
International journal of coal geology, vol. 59, no. 1-2 (2004-07-12)
|
aflevering
|
| 134 |
International journal of coal geology, vol. 54, no. 1-2 (2003-04)
|
aflevering
|
| 135 |
International journal of coal geology, vol. 66, no. 1-2 (2006-02-03)
|
aflevering
|
| 136 |
International journal of coal geology, vol. 65, no. 1-2 (2006-01-03)
|
aflevering
|
| 137 |
International journal of coal geology, vol. 67, no. 1-2 (2006-05-03)
|
aflevering
|
| 138 |
International Journal of Coal Geology, vol. 30, no. 1-2 (1996-06)
|
aflevering
|
| 139 |
International Journal of Coal Geology, vol. 36, no. 1-2 (1998-03)
|
aflevering
|
| 140 |
International Journal of Coal Geology, vol. 34, no. 1-2 (1997-10)
|
aflevering
|
| 141 |
International journal of coal geology, vol. 48, no. 1-2 (2001-12)
|
aflevering
|
| 142 |
International journal of coal geology, vol. 61, no. 1-2 (2005-01-18)
|
aflevering
|
| 143 |
International journal of coal geology, vol. 62, no. 1-2 (2005-04-12)
|
aflevering
|
| 144 |
International Journal of Coal Geology, vol. 37, no. 1-2 (1998-09)
|
aflevering
|
| 145 |
International journal of coal geology, vol. 63, no. 1-2 (2005-07-20)
|
aflevering
|
| 146 |
International Journal of Coal Geology, vol. 41, no. 1-2 (1999-08)
|
aflevering
|
| 147 |
International Journal of Coal Geology, vol. 38, no. 1-2 (1998-12)
|
aflevering
|
| 148 |
International journal of coal geology, vol. 68, no. 1-2 (2006-08-01)
|
aflevering
|
| 149 |
International journal of coal geology, vol. 18, no. 1-2 (1991-07)
|
aflevering
|
| 150 |
International journal of coal geology, vol. 5, no. 1-2 (1985-06)
|
aflevering
|
| 151 |
International journal of coal geology, vol. 21, no. 1-2 (1992-06)
|
aflevering
|
| 152 |
International journal of coal geology, vol. 26, no. 1-2 (1994-07)
|
aflevering
|
| 153 |
International journal of coal geology, vol. 14, no. 1-2 (1989-12)
|
aflevering
|
| 154 |
International journal of coal geology, vol. 20, no. 1-2 (1992-02)
|
aflevering
|
| 155 |
International journal of coal geology, vol. 8, no. 1-2 (1987-06)
|
aflevering
|
| 156 |
International journal of coal geology, vol. 14, no. 1-2 (1989-12)
|
aflevering
|
| 157 |
International journal of coal geology, vol. 18, no. 1-2 (1991-07)
|
aflevering
|
| 158 |
International journal of coal geology, vol. 20, no. 1-2 (1992-02)
|
aflevering
|
| 159 |
International journal of coal geology, vol. 5, no. 1-2 (1985-06)
|
aflevering
|
| 160 |
International journal of coal geology, vol. 21, no. 1-2 (1992-06)
|
aflevering
|
| 161 |
International journal of coal geology, vol. 76, no. 1-2 (2008-10-02)
|
aflevering
|
| 162 |
International journal of coal geology, vol. 82, no. 1-2 (2010-05-01)
|
aflevering
|
| 163 |
International journal of coal geology, vol. 79, no. 1-2 (2009-07-01)
|
aflevering
|
| 164 |
International journal of coal geology, vol. 69, no. 1-2 (2007-01-02)
|
aflevering
|
| 165 |
International journal of coal geology, vol. 34, no. 1-2 (1997-10)
|
aflevering
|
| 166 |
International journal of coal geology, vol. 16, no. 1-3 (1990)
|
aflevering
|
| 167 |
International journal of coal geology, vol. 29, no. 1-3 (1996)
|
aflevering
|
| 168 |
International journal of coal geology, vol. 39, no. 1-3 (1999)
|
aflevering
|
| 169 |
International journal of coal geology, vol. 70, no. 1-3 (2007)
|
aflevering
|
| 170 |
International journal of coal geology, vol. 16, no. 1-3 (1990-12-10)
|
aflevering
|
| 171 |
International journal of coal geology, vol. 29, no. 1-3 (1996-01)
|
aflevering
|
| 172 |
International Journal of Coal Geology, vol. 29, no. 1-3 (1996-01)
|
aflevering
|
| 173 |
International Journal of Coal Geology, vol. 39, no. 1-3 (1999-03)
|
aflevering
|
| 174 |
International journal of coal geology, vol. 16, no. 1-3 (1990-12-10)
|
aflevering
|
| 175 |
International journal of coal geology, vol. 70, no. 1-3 (2007-04-02)
|
aflevering
|
| 176 |
International journal of coal geology, vol. 12, no. 1-4 (1989)
|
aflevering
|
| 177 |
International journal of coal geology, vol. 13, no. 1-4 (1989)
|
aflevering
|
| 178 |
International journal of coal geology, vol. 52, no. 1-4 (2002)
|
aflevering
|
| 179 |
International journal of coal geology, vol. 50, no. 1-4 (2002)
|
aflevering
|
| 180 |
International journal of coal geology, vol. 32, no. 1-4 (1996)
|
aflevering
|
| 181 |
International journal of coal geology, vol. 31, no. 1-4 (1996)
|
aflevering
|
| 182 |
International journal of coal geology, vol. 43, no. 1-4 (2000)
|
aflevering
|
| 183 |
International journal of coal geology, vol. 35, no. 1-4 (1998)
|
aflevering
|
| 184 |
International journal of coal geology, vol. 12, no. 1-4 (1989-06)
|
aflevering
|
| 185 |
International journal of coal geology, vol. 19, no. 1-4 (1991-12)
|
aflevering
|
| 186 |
International journal of coal geology, vol. 13, no. 1-4 (1989-07)
|
aflevering
|
| 187 |
International journal of coal geology, vol. 19, no. 1-4 (1991)
|
aflevering
|
| 188 |
International journal of coal geology, vol. 24, no. 1-4 (1993)
|
aflevering
|
| 189 |
International journal of coal geology, vol. 23, no. 1-4 (1993)
|
aflevering
|
| 190 |
International journal of coal geology, vol. 52, no. 1-4 (2002-11)
|
aflevering
|
| 191 |
International Journal of Coal Geology, vol. 35, no. 1-4 (1998-02)
|
aflevering
|
| 192 |
International Journal of Coal Geology, vol. 32, no. 1-4 (1996-12)
|
aflevering
|
| 193 |
International Journal of Coal Geology, vol. 31, no. 1-4 (1996-11)
|
aflevering
|
| 194 |
International Journal of Coal Geology, vol. 43, no. 1-4 (2000-05)
|
aflevering
|
| 195 |
International journal of coal geology, vol. 50, no. 1-4 (2002-05)
|
aflevering
|
| 196 |
International journal of coal geology, vol. 12, no. 1-4 (1989-06)
|
aflevering
|
| 197 |
International journal of coal geology, vol. 23, no. 1-4 (1993-09)
|
aflevering
|
| 198 |
International journal of coal geology, vol. 24, no. 1-4 (1993-12)
|
aflevering
|
| 199 |
International journal of coal geology, vol. 13, no. 1-4 (1989-07)
|
aflevering
|
| 200 |
International journal of coal geology, vol. 19, no. 1-4 (1991-12)
|
aflevering
|
| 201 |
International journal of coal geology, vol. 23, no. 1-4 (1993-09)
|
aflevering
|
| 202 |
International journal of coal geology, vol. 24, no. 1-4 (1993-12)
|
aflevering
|
| 203 |
International journal of coal geology, vol. 15, no. 2 (1990)
|
aflevering
|
| 204 |
International journal of coal geology, vol. 3, no. 2 (1983)
|
aflevering
|
| 205 |
International journal of coal geology, vol. 11, no. 2 (1989)
|
aflevering
|
| 206 |
International journal of coal geology, vol. 2, no. 2 (1982)
|
aflevering
|
| 207 |
International journal of coal geology, vol. 6, no. 2 (1986)
|
aflevering
|
| 208 |
International journal of coal geology, vol. 10, no. 2 (1988)
|
aflevering
|
| 209 |
International journal of coal geology, vol. 87, no. 2 (2011-08-01)
|
aflevering
|
| 210 |
International journal of coal geology, vol. 85, no. 2 (2011-02-01)
|
aflevering
|
| 211 |
International journal of coal geology, vol. 84, no. 2 (2010-11-01)
|
aflevering
|
| 212 |
International journal of coal geology, vol. 81, no. 2 (2010)
|
aflevering
|
| 213 |
International journal of coal geology, vol. 84, no. 2 (2010)
|
aflevering
|
| 214 |
International journal of coal geology, vol. 73, no. 2 (2008-01-21)
|
aflevering
|
| 215 |
International journal of coal geology, vol. 53, no. 2 (2003)
|
aflevering
|
| 216 |
International journal of coal geology, vol. 51, no. 2 (2002)
|
aflevering
|
| 217 |
International journal of coal geology, vol. 47, no. 2 (2001)
|
aflevering
|
| 218 |
International journal of coal geology, vol. 44, no. 2 (2000)
|
aflevering
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| 219 |
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| 664 |
International journal of coal geology, vol. 250, no. C (2022)
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International journal of coal geology, vol. 248, no. C (2021)
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International journal of coal geology, vol. 233, no. C (2021)
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International journal of coal geology, vol. 231, no. C (2020)
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International journal of coal geology, vol. 236, no. C (2021)
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International journal of coal geology, vol. 227, no. C (2020)
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International journal of coal geology, vol. 238, no. C (2021)
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International journal of coal geology, vol. 266, no. C (2023)
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International journal of coal geology, vol. 281, no. C (2024)
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International journal of coal geology, vol. 271, no. C (2023)
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International journal of coal geology, vol. 275, no. C (2023)
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International journal of coal geology, vol. 293, no. C (2024)
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International journal of coal geology, vol. 290, no. C (2024)
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International journal of coal geology, vol. 292, no. C (2024)
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International journal of coal geology, vol. 291, no. C (2024)
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International journal of coal geology, vol. 286, no. C (2024)
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International journal of coal geology, vol. 289, no. C (2024)
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International journal of coal geology, vol. 294, no. C (2024)
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International journal of coal geology, vol. 288, no. C (2024)
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International journal of coal geology, vol. 287, no. C (2024)
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International journal of coal geology, vol. 300, no. C (2025)
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International journal of coal geology, vol. 299, no. C (2025)
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International journal of coal geology, vol. 301, no. C (2025)
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International journal of coal geology, vol. 103, no. Complete (2012-12-01)
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International journal of coal geology, vol. 89, no. Complete (2012-01-01)
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International journal of coal geology, vol. 100, no. Complete (2012-10-01)
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International journal of coal geology, vol. 101, no. Complete (2012-11-01)
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International journal of coal geology, vol. 98, no. Complete (2012-08-01)
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International journal of coal geology, vol. 99, no. Complete (2012-09-01)
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International journal of coal geology, vol. 93, no. Complete (2012-04-01)
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International journal of coal geology, vol. 92, no. Complete (2012-03-01)
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International journal of coal geology, vol. 90-91, no. Complete (2012-02-01)
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International journal of coal geology, vol. 102, no. Complete (2012-11-30)
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International journal of coal geology, vol. 96-97, no. Complete (2012-07-01)
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International journal of coal geology, vol. 95, no. Complete (2012-06-01)
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International journal of coal geology, vol. 94, no. Complete (2012-05-01)
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International journal of coal geology, vol. 168, no. P1 (2016)
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International journal of coal geology, vol. 168, no. P2 (2016)
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International journal of coal geology, vol. 152, no. PA (2015)
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International journal of coal geology, vol. 152, no. PB (2015)
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