@ARTICLE {ISLAM:1980,
title = {Response of cowpea (Vigna unguiculata) to inoculation with VA-mycorrhizal fungi and to rock phosphate fertilization in some unsterilized Nigerian soils},
author = {Islam, R. and Ayanaba, A. and Sanders, F. E. },
journal = {Plant and Soil},
year = {1980},
volume = {54},
pages = {107--117},
}