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100   $a20060623d2006      ua              
101 0 $aeng
120   $ab||||||||||||
121   $a||af|||||
124   $bd
135   $aurcnu--|m||||
181   $ccrd$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aIsotopic ages of rocks in the northern Front Range, Colorado$b[electronic resource] /$fby Anna B. Wilson and Bruce Bryant ; U.S. Department of the Interior, U.S. Geological Survey
205   $aVersion 1.0.
210  1$aDenver, Colo. :$cU.S. Geological Survey,$d2006.
215   $aelectronic maps $cHTML, digital, PDF file
225 1 $aU.S. Geological Survey open-file report ;$v2006-1051
300   $aTitle from HTML index page (viewed on June 22, 2006).
300   $aIncludes text.
320   $aIncludes bibliographical references.
606   $aIsotope geology$zFront Range (Colo. and Wyo.)$vMaps
608   $aMaps.$2lcgft
615  0$aIsotope geology
700   $aWilson$b Anna B$01381484
701   $aBryant$b Bruce$f1930-$01385606
712 02$aGeological Survey (U.S.)
801  0$bGIS
801  1$bGIS
801  2$bGPO
906   $aBOOK
912   $a9910695918803321
996   $aIsotopic ages of rocks in the northern Front Range, Colorado$93521990
997   $aUNINA