@INPROCEEDINGS {EWOOL:2006, title = {Potential for improving maize for iron, zinc and beta-carotene content in Ghana}, author = {Ewool, M. * and Sallah, P. and Nelson-Quartey, F. and Menkir, A. }, booktitle = {International Plant Breeding Symposium, 20-25 August 2006}, year = {2006}, pages = {6}, }