=LDR 00000nam a2200000ui 4500 =001 606 =008 250530s1991\\\\xx\|||||||||||||||||eng\d =082 04$a551.48 YEN =100 1\$aYen, Ben Chie =245 10$aCatchment runoff and rational formula =260 \\$aColorado :$bWater Resources Publications,$c1991 =852 \\$bFreeman Library$cBooks$h551.48 YEN