00346nam a2200121Ia 4500008004100000082002600041100001900067245005800086260003200144300001500176600001800191650001500209140224s9999    xx            000 0 und d  a581.143:633(082.2) M2  aMc Laren, J.S.  aChemical manipulation of Crop growth and development/  aLondonbButter worthsc1982  axiii,564p.  aJ.S. Mc Laren  aPhysiology