PHYTOPHTHORA DISEASE OF COCOA. Edited by P. H. Gregory. Longman Group Limited, London 1974. ISBN 0 582 46658 X Pp.xii + 348. Price £17.50. ECONOMIC ENTOMOLOGY IN THE TROPICS K. P. Lamb Academic Press Inc, London, 1974. ISBN: 0 12 435650 2 Pp.194, Price £4.00. MICROBIAL CONTROL OF INSECTS AND MITES. Edited by H. D. Burges and N. W. Hussey. Academic Press London and New York, 1971. Pp.xxvii + 861. Price £7.20. ANNUAL REVIEW OF PHYTOPATHOLOGY, VOLUME 12, 1974. Edited by Kenneth F. Baker. Annual Reviews Inc., Palo Alto, California, USA, 1974. ISBN 0 8243 1312 7. Pp. 502. Price US $15.00 (USA) US $15.50 (elsewhere). NEMATICIDE INDEX. Janina H. Bard. Technical Communication No. 46 of the Commonwealth Institute of Helminthology. Commonwealth Agricultural Bureaux, 1974. SBN 085 198 309 X. Pp. vii + 98. Price £4. PESTS OF ORNAMENTAL PLANTS. P. Becker. Ministry of Agriculture, Fisheries and Food Bulletin No. 97. 3rd edition. HMSO, London, 1974. ISBN 011 240397 2. Figs. 48. Pp. 175. Price £3.80 (by post)