00317nam a2200121Ia 4500008004100000082001500041100001700056245002800073260004500101300001200146600001600158650002100174140224s9999    xx            000 0 und d  a581.135 L3  aHanson, L.P.  aPlant growth regulators  aNew JerseybNoyes Data Corporationc1973  ax,276p.  aL.P. Hanson  aPlant regulators