@INPROCEEDINGS {HARRISON:1973, title = {Improvement of cereals in tropical Africa}, author = {Harrison, M. N. }, booktitle = {Compte rendu des seances: semaine d'etude des problemes intertropicaux, 11 - 15 Septembre 1972}, year = {1973}, month = {September}, pages = {161--170}, publisher = {Gembloux}, location = {Belgium}, }