Sykes, J.T.2007-11-131977-04-012007-11-131977IDRC-080ehttp://hdl.handle.net/10625/18219Meeting: International Society for Tropical Root Crops Symposium, 4th, 1-7 Aug. 1976, Cali, COIn IDL-1335p. 151-152application/pdfenIBPGR and FAO programs for the collection of crop germ plasm and its long term conservationBook Chapter