=LDR 00000nam a2200000ui 4500 =001 3594 =008 250530s2000\\\\xx\|||||||||||||||||eng\d =082 04$a519.5 WAL =100 1\$aWaltham, David =245 10$amathematics: a simple tool for geologists =260 \\$aOxford :$bBlackwell Scientific,$c2000 =852 \\$bFreeman Library$cReserve$h519.5 WAL