@MISC {CAVENESS:1973, title = {Nematode attack on cowpeas in Nigeria}, author = {Caveness, F. E. }, year = {1973}, month = {October}, howpublished = {Proceedings of the First IITA Grain Legume Improvement Workshop, held at the International Institute of Tropical Agriculture, Ibadan, Nigeria, 29 October-2 November, 1973. p. 302}, }