00266nam a2200109Ia 4500008004100000082003200041100002000073245003300093260000900126300001000135650001100145140113s9999    xx            000 0 und d  a631.81.095.337:631.811.3 G7  a" Cowie, G. A."  aPotash deficiency symposiums  b1937  a235p.  aPotash