@BOOK {MYERS:1993, title = {Croisement manuel du niebe: Guide de recherche de l'Iita, No. 42}, author = {Myers, G. O. }, series = {Guide de recherche de l'Iita, No. 42}, year = {1993}, month = {February}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {19p.}, }