00434nam a2200145Ia 4500008004100000020001500041082001700056100003400073245003400107260005100141300000800192650004100200650003400241653001300275170901s1973    xx            000 0 und d  a0912394064  a631.62bU-4D  aU.S Department of Agriculture 0aDrainage of Agricultural Land  aNew YarkbWater Information Center, Inc.c1973  a428  aAgriculture and related technologies  aTechnology (Applied sciences)  aDrainage