00345nam a2200121Ia 4500008004100000082001700041100001600058245004900074260003800123300001500161600001400176650003300190140224s9999    xx            000 0 und d  a633.581.1 L8  aShivRaj, A.  aAn introduction to physiology of field crops  aNew DelhibOxford and IBHcc 1978  aviii,272p.  aA.ShivRaj  aPlant physiology,Field crops