LEADER 01532oam 2200481 450 001 9910707396103321 005 20160706143519.0 035 $a(CKB)5470000002463553 035 $a(OCoLC)889600715 035 $a(EXLCZ)995470000002463553 100 $a20140829d1990 ua 0 101 0 $aeng 135 $aurmn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aDefinition and world resources of natural bitumens /$fby Richard F. Meyer and Wallace de Witt, Jr 210 1$a[Reston, Va.] :$cDepartment of the Interior, U.S. Geological Survey,$d1990. 210 2$a[Washington, D.C.] :$cUnited States Government Printing Office. 215 $a1 online resource (iv, 14 pages) $cillustrations 225 1 $aU.S. Geological Survey Bulletin ;$v1944 300 $aTitle from title screen (viewed Aug. 20, 2014). 320 $aIncludes bibliographical references. 606 $aAsphalt 606 $aBitumen 606 $aAsphalt$2fast 606 $aBitumen$2fast 615 0$aAsphalt. 615 0$aBitumen. 615 7$aAsphalt. 615 7$aBitumen. 700 $aMeyer$b R. F$g(Richard F.),$f1921-$01385584 702 $aDe Witt$b Wallace$cJr.,$f1920-2012, 712 02$aGeological Survey (U.S.), 801 0$bCOP 801 1$bCOP 801 2$bOCLCO 801 2$bOCLCF 801 2$bGPO 906 $aBOOK 912 $a9910707396103321 996 $aDefinition and world resources of natural bitumens$93456046 997 $aUNINA