@INPROCEEDINGS {MULONGOY:1990, title = {Agronomic and economic benefits of nitrogen contributed by legumes in live-mulch and alley cropping systems}, author = {Mulongoy, K. and Akobundu, I. }, booktitle = {Nitrogen fixation, achievements and objectives: proceedings of the 8th International Congress on nitrogen fixation, Knoxville, Tennessee, U.S.A. May 20-26, 1990}, year = {1990}, pages = {625--632}, publisher = {Chapman and Hall}, address = {New York, London}, note = {ISBN: 0-901436-64-X}, }