@INBOOK {MENKIR:2003g, title = {Assessment of B-carotene content in tropical early-and late-maturing yellow maize varieties : Book of Abstracts}, author = {Menkir, A. and Maziya-Dixon, B. }, year = {2003}, type = {Paper presented at: arnel R. Hallauer International Symposium on Plant Breeding; 17-22 August,}, address = {Mexico City, Mexico}, }