00312nam 2200060 450000100030000000300230000300500090002600800410003508200110007602000150008710000180010226000130012024500470013360StarLibrary Marc Built20180713201711 ||||| |||||||||||amh  a622.15 a0632049294 aPHILIP KEAREY bBlackwell aAn introduction to geophysical exploration