@INPROCEEDINGS {PORTER:1973, title = {Documentation and maintenance of the germplasm collection of Vigna unguiculata}, author = {Porter, W. M. }, booktitle = {Proceedings of the First IITA Grain Legume Improvement Workshop, held at the International Institute of Tropical Agriculture, Ibadan, Nigeria, 29 October-2 November, 1973}, year = {1973}, month = {October}, pages = {17}, }