LEADER 02449oam 2200613 450 001 9910705656903321 005 20170519103005.0 035 $a(CKB)5470000002451827 035 $a(OCoLC)891574863 035 $a(OCoLC)995470000002451827 035 $a(EXLCZ)995470000002451827 100 $a20140929d1967 ua 0 101 0 $aeng 135 $aurmn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aBig Snowy and Amsden Groups and the Mississippian-Pennsylvanian boundary in Montana /$fby Edwin K. Maughan and Albert E. Roberts 210 1$aWashington :$cU.S. Department of the Interior, Geological Survey,$d1967. 210 2$aWashington :$cUnited States Government Printing Office. 215 $a1 online resource (iii, B27 pages) $cillustrations, maps +$e4 plates 225 1 $aGeological Survey professional paper ;$v554-B 225 1 $aShorter contributions to general geology ;$v[1966] 300 $aTitle from title screen (viewed September 24, 2014). 300 $aAlso available online in PDF format from the U.S. Geological Survey Warehouse (http://pubs.er.usgs.gov/). 300 $a"A study of the Upper Mississippian and Pennsylvanian sedimentary formations with special emphasis on their regional correlation, variation in lithology, and age assignments." 320 $aIncludes bibliographical references (pages B25-B27). 606 $aGeology$zMontana 606 $aGeology, Stratigraphic$yMississippian 606 $aGeology, Stratigraphic$yPennsylvanian 606 $aGeology$2fast 606 $aGeology, Stratigraphic$2fast 606 $aMississippian Geologic Period$2fast 606 $aPennsylvanian Geologic Period$2fast 607 $aMontana$2fast 615 0$aGeology 615 0$aGeology, Stratigraphic 615 0$aGeology, Stratigraphic 615 7$aGeology. 615 7$aGeology, Stratigraphic. 615 7$aMississippian Geologic Period. 615 7$aPennsylvanian Geologic Period. 700 $aMaughan$b Edwin K.$f1926-1995,$01402432 702 $aRoberts$b Albert Eugene$f1921- 712 02$aGeological Survey (U.S.), 801 0$bCOP 801 1$bCOP 801 2$bOCLCO 801 2$bOCLCF 801 2$bGPO 906 $aBOOK 912 $a9910705656903321 996 $aBig Snowy and Amsden Groups and the Mississippian-Pennsylvanian boundary in Montana$93472872 997 $aUNINA