00305nam a2200097Ia 4500008004100000082004600041100003300087245004000120260003900160300000800199140113s9999    xx            000 0 und d  a"631.8.001.8""1968.2.14/15""(082.2)   K8"  a"Nelson, L.B., et al�Eds."  aChanging Patterns in Fertilizer use  a1968bSSSA Inc.c"Medison, U.S.A."  a466