@BOOK {INAIZUMI:1999, title = {Adoption and impact of dry-season dual-purpose cowpea in the semiarid zone of Nigeria}, author = {Inaizumi, H. and Singh, B. and Sanginga, P. and Manyong, V. and Adesina, A. and Tarawali, S. }, series = {Impact series}, year = {1999}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, isbn = {978 131 171 1}, note = {16p.; Impact series}, }