[1]
Okigbo, B.N. 2014. Nitrogen fixing trees in Africa: priorities and research agenda in multiuse exploitation of plant resources. Pesquisa Agropecuaria Brasileira. 19, 13 (Apr. 2014), 325–330. DOI:https://doi.org/10.1590/S1678-3921.pab1984.v19.17584.