| Abstract: | Abstract Extension Science: Information Systems in Agricultural Development. N. Röling. Cambridge, Cambridge University Press, 1988. £35 h/back 0–521–34437–9, £11.95 p/back 0–521–34887–0. Weed Science in the Tropics: Principles and Practices. By I. Okezie Akobundu. Wiley, 1987, pp.522. ISBN 0–471–91544–0. Price ? Trichogramma and Other Egg Parasites. Edited by J. Voegle, J. Waage and J. van Lenteren. Institut National de la Recherche Agronomique, Paris, 1988. 644 pp. White Grubs and Their Management. By A. K. Raodeo and S. V. Deshpande. 1987. (Research Bulletin Vol. 11, Marathwada Agricultural University Parghani (India)), 77pp, 6 plates, 35 figs. |
