@BOOK {UMEH:1993a, title = {Les insectes nuisibles du riz au champ en Afrique: biologie et methode de lutte}, author = {Umeh, E. D. N. * and Joshi, R. C. and Ukwungwu, M. N. *}, booktitle = {Guide de recherche de l'Iita, No. 43}, year = {1993}, month = {February}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {30p.}, }