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035   $a(OCoLC)231830883
035   $a(EXLCZ)995470000002382730
100   $a20080501d2006      ua             0
101 0 $aeng
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aPetrology of the Crazy Mountains dike swarm and geochronology of associated sills, south-central Montana$b[electronic resource] /$fby Edward A. du Bray, Stephen S. Harlan, and Anna B. Wilson
210  1$aReston, Va. :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d2006.
215   $aiii, 21 pages $cdigital, PDF file
225 1 $aProfessional paper ;$v1715
300   $aTitle from PDF t.p. (viewed July 29, 2008).
320   $aIncludes bibliographical references.
606   $aPetrology$zMontana$zCrazy Mountains
606   $aDikes (Geology)$zMontana$zCrazy Mountains
606   $aHistorical geology$zMontana$zCrazy Mountains
606   $aSills (Geology)$zMontana$zCrazy Mountains
615  0$aPetrology
615  0$aDikes (Geology)
615  0$aHistorical geology
615  0$aSills (Geology)
700   $aDu Bray$b E. A$01385525
701   $aHarlan$b Stephen S$01405201
701   $aWilson$b Anna B$g(Anna Burack)$01381484
712 02$aGeological Survey (U.S.)
801  0$bQCL
801  1$bQCL
801  2$bGPO
906   $aBOOK
912   $a9910696815503321
996   $aPetrology of the Crazy Mountains dike swarm and geochronology of associated sills, south-central Montana$93530061
997   $aUNINA