Dupont, J.2007-11-131999-03-262007-11-131983http://hdl.handle.net/10625/22768French version available in IDRC Digital Library: Igname a ses raisonsSpanish version available in IDRC Digital Library: Name tiene sus razonesp. 23enYAMSDIETGENETIC IMPROVEMENTCAMEROONNIGERIAYams have their reasonsEducation and changeJournal Article