00362nam a2200109Ia 4500008004100000082003800041245006300079260002700142300001000169600004700179650002600226130903s9999    xx            000 0 und d  a631.83.001.5(52) 1957 (082.2)  J8  aNine papers read at the first Japanese Potassium Congress.  aSwitzerlandbIPIc1957  a137p.  aJapanese Potassium Symposium, Tokyo, 1977.  aPotassium Fertilizers