@INBOOK {BLADE:1997,
title = {Recent developments in cowpea cropping systems research},
author = {Blade, S. and Shetty, S. V. R. and Terao, T. and Singh, B. },
year = {1997},
type = {Advances in cowpea research},
pages = {114--128},
chapter = {10},
publisher = {International Institute of Tropical Agriculture (IITA); Japan International Research Center for Agricultural Sciences (JIRCAS)},
address = {Ibadan, Nigeria},
}