01230oam 2200385Ia 450 991069734440332120080813101344.0(CKB)5470000002387489(OCoLC)53295535(EXLCZ)99547000000238748920031027d2003 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierU.S. Geological Survey World Wide Web information[electronic resource]Reston, VA :U.S. Dept. of the Interior, U.S. Geological Survey,[2003?]1 electronic text HTML fileFact sheet ;055-03Title from title screen (viewed on Aug. 12, 2008)."June 2003."Earth sciencesComputer network resourcesGovernment Web sitesUnited StatesEarth sciencesComputer network resources.Government Web sitesGeological Survey (U.S.)GISGISOCLCQGPOBOOK9910697344403321U.S. Geological Survey World Wide Web information3195278UNINA