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100   $a20081016d2005      ua             0
101 0 $aeng
135   $aurmnu||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$a??Ar/³?Ar and K-Ar geochronology and tectonic significance of the Upper Cretaceous Adel Mountain volcanics and spatially associated Tertiary igneous rocks, northwestern Montana$b[electronic resource] /$fby Stephen S. Harlan ... [and others]
210  1$aReston, Va. :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d2005.
215   $aiv, 29 pages $cdigital, PDF file
225 1 $aProfessional paper ;$v1696
300   $aTitle from PDF t.p. (viewed Oct. 16, 2008).
320   $aIncludes bibliographical references (pages 18-19).
606   $aGeochronometry$zMontana$zCraig Region
606   $aIgneous rocks$zMontana$zCraig Region
606   $aGeology, Stratigraphic$yCretaceous
606   $aGeology, Stratigraphic$yTertiary
606   $aRadioactive dating$zMontana$zCraig Region
615  0$aGeochronometry
615  0$aIgneous rocks
615  0$aGeology, Stratigraphic
615  0$aGeology, Stratigraphic
615  0$aRadioactive dating
701   $aHarlan$b Stephen S$01405201
712 02$aGeological Survey (U.S.)
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910697637103321
996   $a??Ar$93506621
997   $aUNINA