=LDR 00000nam a2200000ui 4500 =001 6442 =008 250616s1975\\\\xx\|||||||||||||||||eng\d =082 04$a519.8 WAL =100 1\$aWalsh, G.R. =245 10$aMethods of Optimization =260 \\$aChichester :$bWiley,$c1975 =852 \\$bGeography Basement$cBooks$h519.8 WAL