Institut de recherches agronomiques et forestièresLyonga, S.N.Steiner, K.G.Pfeiffer, H.Nzietchueng, S.2007-11-121985-04-012007-11-121979http://hdl.handle.net/10625/6714Text1 digital file (107 p. : ill.)Application/pdfenROOT CROPSAGRICULTURAL RESEARCHRESEARCH CENTRESPLANT BREEDINGCAMEROONRESEARCH RESULTSYAMSCASSAVASWEET POTATOESCULTIVATION PRACTICESANNUAL REPORTSCameroon National Root Crops Improvement Programme (CNRCIP): annual technical report, 1979IDRC-Related Report