00299nam a2200109Ia 4500008004100000082001500041100002200056245003800078260004600116300001000162650001700172140113s9999    xx            000 0 und d  a581.143 K8  a" Steward, F. C."  aGrowth and organization in plants  b"Addidon-wesley publishing company, 1968"  a564p.  aPlant growth