=LDR 00000nam a2200000ui 4500 =001 1841 =008 250530s1979\\\\xx\|||||||||||||||||eng\d =082 04$a551.48 GRE =100 1\$aGreen, F. H. W. =245 10$aField drainage in Europe: a quantitative survey =260 \\$aWallingford, Oxon :$bInstitute of Hydrology,$c1979 =852 \\$bFreeman Library$cPamphlets$h551.48 GRE