@INPROCEEDINGS {MENKIR:2003b, title = {Challenges and opportunities in biotechnology for enhancing iron and zinc content in maize: Paper presented at the Third Annual Biotechnology Conference at the International Institute of Tropical Agriculture (IITA), 7-23 November}, author = {Menkir, A. }, booktitle = {Paper presented at the Third Annual Biotechnology Conference at the International Institute of Tropical Agriculture (IITA), 7-23 November}, year = {2003}, location = {Ibadan, Nigeria}, note = {IITA Technologies}, }