Influence of Cultivar on the Postharvest Hardening of Trifoliate Yam (Dioscorea dumetorum) Tubers - Nono, Benoit; Bell, Joseph Martin; Mahbou Somo Toukam, Gabriel; Akdowa Panyoo, Emmanuel; Siadjeu, Christian; Medoua, Gabriel Nama (Advances in Agriculture, 2016)