@INPROCEEDINGS {LAWSON:1975a, title = {Some physical aspects of crop environment in Ibadan and possible implications on crop performance}, author = {Lawson, T. L. }, booktitle = {Proceedings of Physiology Program Formulation Workshop held at IITA, Ibadan, April, 1975.}, year = {1975}, month = {April}, pages = {69--73}, }