@TECHREPORT {IITA:2001b, title = {Project 5: improvement of yam-based systems}, author = {IITA, }, year = {2001}, institution = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, note = {RTB; Root and Tuber; Yam.; Project 5 Annual Report. 2001. 60p.}, }