@BOOK {KLING:1992, title = {Qualite du mais et nutrition: Guide de recherche de l'Iita, No. 33}, author = {Kling, J. }, series = {Guide de recherche de l'Iita, No. 33}, year = {1992}, month = {April}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {30p.}, }