@ARTICLE {ADU-DAPAAH:1988, title = {Heteroris and inbreeding depression in cowpea}, author = {Adu-Dapaah, H. K. and Singh, B. and Chheda, H. R. and Fatokun, C. }, journal = {Tropical Grain Legume Bulletin}, year = {1988}, volume = {35}, pages = {23--27}, }