@INBOOK {KOLAWOLE:2002,
title = {Differential response of cowpea lines to application of P fertilizer},
author = {Kolawole, G. and Tian, G. and Singh, B. },
year = {2002},
type = {Challenges and opportunities for enhancing sustainable cowpea production:},
pages = {319--328},
note = {Proceedings of the World Cowpea Conference III held at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 4-8 September 2000},
}