@ARTICLE {SANGINGA:1988a, title = {Nodulation and growth of Leucaena leucocephala (Lam.) de Wit as affected by inoculation and N fertilizer}, author = {Sanginga, N. and Mulongoy, K. and Ayanaba, A. }, journal = {Plant and Soil}, year = {1988}, volume = {112}, pages = {129--135}, }