00291nam a2200109Ia 4500008004100000082001500041100002000056245002800076260005000104300001000154650001700164140113s9999    xx            000 0 und d  a581.135 J3  a" Audus, L. J."  aPlant growth substances  b"London : Leonard hill (books) limited, 1953"  a465p.  aPlant growth