@INPROCEEDINGS {A.:2005, title = {Adoption of improved cowpea varieties in northern Nigeria: a discourse of the social processes involved}, author = {Tipilda, A. and Manyong, V. and Alene, A. and Singh, B. }, booktitle = {Comparative Social Science Congress on Technology and Risk: Social Assessment. July, Oslo, Norway : proceedings}, year = {2005}, month = {July}, }