nr |
titel |
auteur |
tijdschrift |
jaar |
jaarg. |
afl. |
pagina('s) |
type |
1 |
Characteristics of sphagnum coal considered as a new genetic type of coal
|
Jie, Lu |
|
1989 |
11 |
2 |
p. 191-203 13 p. |
artikel |
2 |
Depositional environments and coal petrography of the Permian Karoo Sequence: Witbank Coalfield, South Africa
|
Holland, M.J. |
|
1989 |
11 |
2 |
p. 143-169 27 p. |
artikel |
3 |
Geochemical and mineralogical changes in a coal seam due to contact metamorphism, Sydney Basin, New South Wales, Australia
|
Ward, Colin R. |
|
1989 |
11 |
2 |
p. 105-125 21 p. |
artikel |
4 |
Iron sulfide precipitation sequence in Albian coals from the Maestrazgo Basin, southeastern Iberian Range, northeastern Spain
|
Querol, X. |
|
1989 |
11 |
2 |
p. 171-189 19 p. |
artikel |
5 |
Variation of graptolite reflectance with depth of burial
|
Goodarzi, F. |
|
1989 |
11 |
2 |
p. 127-141 15 p. |
artikel |