=LDR 00000nam a2200000ui 4500 =001 3229 =008 250530s1989\\\\xx\|||||||||||||||||eng\d =082 04$a551.447 FOR =100 1\$aFord, Derek =245 10$aKarst Geomorphology and Hydrology =260 \\$aLondon :$bChapman & Hall,$c1989 =700 1\$aWilliams, P. W. =852 \\$bFreeman Library$cBooks$h551.447 FOR