@book{11106,
	author = {Ayensu, Edward},
	title = {Guinea yams. The botany, ethnobotany, use and possible future of yams in west Africa},
	url = {https://drive.google.com/file/d/1mfmXhDn9QOuf4a1F5JFqj_O-tscL9ziZ/view?usp=drivesdk}
}