00271nam a2200097Ia 4500008004100000082002500041100003200066245002800098260003900126300000800165140113s9999    xx            000 0 und d  a631.62(082.2)   L4.1  a"Van, Schifgaarde, J., ed."  aDrinage for Agriculture  a1974bSSSA Inc.c"Medison, U.S.A."  a700