00355nam a2200109Ia 4500008004100000082003200041245007600073260002700149300001000176600003300186650002600219130903s9999    xx            000 0 und d  a631.83(52) 1957 (082.2)  J8  aNine papers read at the first Japanese Potassium Congress, Tokyo; 1957.  aSwitzerlandbIPIc1957  a137p.  aJapanese Potassium Symposium  aPotassium Fertilizers