@PROCEEDINGS {SHANNON:1984a, title = {Factors responsible for variable growth of soybeans int he Nigerian Guinea savanna}, author = {Shannon, D. A. and Kueneman, E. and Wright, M. J. }, booktitle = {Presented at the Third World Soybean Conference, 12-17 August}, year = {1984}, publisher = {Iowa State University}, address = {Ames, Iowa, USA}, }