@book{68973,
	author = {Centro Internacional de la Papa and Workshop on sweet Potato Improvement in Africa (1987: Nairobi, Kenya)},
	title = {Improvement of sweet potato (Ipomoea batatas) in east Africa : with some references of other tuber and root crops : report of the workshop on sweetpotato...},
	publisher = {CIP,},
	year = {1988},
	address = {Lima :},
	note = {32-122}
}