00548    a2200157   4500020001500000082001500015100002200030245014100052260006600193300001600259440001400275650001700289650002800306700002600334700003000360  a0889361150  a635.2bPRO  aCock, James eed.  aProceedings of the fourth symposium of the international society for tropical root crops bheld at CIAT, cali, colombia, 1-7 August 1976  aCanadabInternational Development Research Centerc1977g1977  a277p.c25cm  aIDRC-080e  aGarden crops  aEdible tubers and bulbs  aGraham, Michael eed.  aMacIntyre, Reginald eed.