00282nam a2200109Ia 4500008004100000082001500041100001900056245002800075260004200103300001000145650001700155140113s9999    xx            000 0 und d  a581.135 J1  a"Skoog, Folke"  aPlant growth substances  b"University of wisconsin press, 1951"  a476p.  aPlant growth