00310nam a2200109Ia 4500008004100000082002100041245006200062260002300124300001000147600002100157650002200178130903s9999    xx            000 0 und d  a631.5' 23' 3  N9  aGenes in the Field on-farm conservation of crop diversity  aOttawabIDRCc2000  a288p.  aBrush, B.Stephen  aGenetic resources