00273nam a2200097Ia 4500008004100000082003600041100001400077245002200091260005400113300000800167140113s9999    xx            000 0 und d  a"631.416.4""1972""(082.2)   L2"  aAnonymous  aPotasium in soil.  a1972bInternational Potash InstitutecSwitzerland  a219