@MANUAL {MAROYA:2017, title = {Manual for clean foundation seed yam production using aeroponics system}, author = {Maroya, N. and Balogun, M. and Aighewi, B. and Lasisi, J. and Asiedu, R. }, year = {2017}, organization = {International Institute of Tropical Agriculture}, address = {Ibadan, Nigeria}, note = {WAHub; RTB; Yam; ISBN: 978-978-8444-88-6; 68p.; Learning material}, }