[1]
Okito, A. et al. 2004. Nitrogen fixation by groundnut and velvet bean and residual benefit to a subsequent maize crop. Pesquisa Agropecuaria Brasileira. 39, 12 (Dec. 2004), 1183–1190. DOI:https://doi.org/10.1590/S1678-3921.pab2004.v39.6894.