00269nam a2200097Ia 4500008004100000082002200041100005200063245002100115260002700136300000800163140113s9999    xx            000 0 und d  a631.4:546.18   K5  a"Britain (Ministry of Agriculture,Fish & Food)"  aSoil Phosphorous  a1965bH.M.S.O.cLondon  a159