@INPROCEEDINGS {SANGINGA:1995, title = {Increasing biological N2 fixation and its contribution to the N cycle in alley cropping}, author = {Sanginga, N. and Mulongoy, K. }, booktitle = {Alley farming research and development: proceedings of an international conference on alley farming, 14-18 September, 1992}, year = {1995}, pages = {90--102}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {In: Alley farming research and development: proceedings of an international conference on alley farming, 14-18 September, 1992}, }