=LDR 00000nam a2200000ui 4500 =001 2444 =008 250530s1984\\\\xx\|||||||||||||||||eng\d =082 04$a551.49 LAF =100 1\$aLaFleur, R. G. =245 10$aGroundwater as a geomorphic agent =260 \\$aBoston, MA :$bAllen & Unwin,$c1984 =852 \\$bFreeman Library$cBooks$h551.49 LAF