@BOOK {UMEH:1995, title = {Field insect pests of rice in Africa; biology and control: IITA research guide, No. 43}, author = {Umeh, E. D. N. * and Joshi, R. C. and Ukwungwu, M. N. *}, series = {IITA research guide, No. 43}, year = {1995}, month = {May}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, }