00413nam a2200157Ia 4500008004100000082001700041100002500058245003800083260004600121300000800167650002300175650001800198653001400216653001100230653001400241170901s1950    xx            000 0 und d  a581.15bS70V  aStebbins, G. Ledyard 0aVariation And Evolution in Plants  aNew YorkbColumbia University Pressc1950  a643  aBotanical sciences  aPure Sciences  aEvolution  aPlants  aVariation