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100   $a20030212d2003      ua             0
101 0 $aeng
135   $aurmn||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$aGeochemistry of Permian rocks from the margins of the Phosphoria Basin$b[electronic resource] $eLakeridge Core, western Wyoming /$fby Robert B. Perkins ... [and others]
210  1$aMenlo Park, CA :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d2003.
225 1 $aOpen-file report ;$v03-21
300   $aTitle from PDF title screen (viewed on Dec. 23, 2003).
300   $a"This report is available only on the Web."
320   $aIncludes bibliographical references.
517   $aGeochemistry of Permian rocks from the margins of the Phosphoria Basin 
606   $aGeochemistry$zWyoming$zSublette County
606   $aGeology, Stratigraphic$yPermian
607   $aPhosphoria Formation
615  0$aGeochemistry
615  0$aGeology, Stratigraphic
701   $aPerkins$b Robert B$01385486
712 02$aGeological Survey (U.S.)
801  0$bGIS
801  1$bGIS
801  2$bGPO
906   $aBOOK
912   $a9910691823203321
996   $aGeochemistry of Permian rocks from the margins of the Phosphoria Basin$93433095
997   $aUNINA