@ARTICLE {OKIGBO:1981f,
title = {Plants and agroforestry in landuse systems in West Africa - A conceptual framework for planning and establishment of research priorities},
author = {Okigbo, B. },
journal = {Paper presented at the ICRAF's Consultative Meeting on Plant Research and Agroforestry, Nairobi},
year = {1981},
month = {April},
}