@INBOOK {SINGH:1997g, title = {Recent advances in cowpea breeding}, author = {Singh, B. and Chambliss, O. L. and Sharma, B. }, year = {1997}, type = {Advances in cowpea research}, pages = {30--49}, chapter = {3}, publisher = {International Institute of Tropical Agriculture (IITA); Japan International Research Center for Agricultural Sciences (JIRCAS)}, address = {Ibadan, Nigeria}, }