@BOOK {MYERS:1996a, title = {Hand crossing of cowpeas: IITA research guide, No. 42}, author = {Myers, G. O. }, series = {IITA research guide, No. 42}, year = {1996}, month = {October}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {21p.}, }