@ARTICLE {SANGINGA: 1994a, title = {Persistence and recovery of introduced Rhizobium ten years after inoculation on Leucaena leucocephala grown on an Alfisol in southwetern Nigeria}, author = {Sanginga, N. and Danso, S. K. A. * and Mulongoy, K. and Ojeifo, A. A. }, journal = {Plant and Soil}, year = {1994}, volume = {159}, pages = {199--204}, }