@MISC {DANSO:1975b, title = {Initial studies on the legume: rhizobium symbiosis}, author = {Danso, S. K. A. }, year = {1975}, month = {June}, howpublished = {Proceedings of IITA Collaborators' Meeting on Grain Legume Improvement held at IITA on 9-13 June, 1975 edited by R. A. Luse and K. O. Rachie. p. 135}, }