=LDR 00000nam a2200000ui 4500 =001 4450 =008 250530s1990\\\\xx\|||||||||||||||||eng\d =082 04$a551.48 WAR =100 1\$aWard, R. C. =245 10$aPrinciples of hydrology =260 \\$aNew York :$bMcGraw-Hill,$c1990 =700 1\$aRobinson, M. =852 \\$bFreeman Library$cReserve$h551.48 WAR