@PROCEEDINGS {ISLAM:1976, title = {Response of cowpea (Vigna unguiculata) to VA-mycorhizal inoculation and rock phosphate fertilization in five unsterile Nigerian soils}, author = {Islam, R. and Ayanaba, A. and Sanders, F. E. }, booktitle = {Presented at the Fifth Annual Conference of the Nigerian Society of Microbiology, University of Ibadan,}, year = {1976}, month = {December}, }