00285nam a2200097Ia 4500008004100000082001600041100003600057245004900093260003700142300000800179140113s9999    xx            000 0 und d  a631.62   G9  a"Ayres, Q.C. and Scoates, A.E."  a"Land drainage and reclamation, 2nd edition"  a1939bMcGraw Hill BookcNew York  a496