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035   $a(EXLCZ)995470000002468204
100   $a20140805d1980      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aRelation of the carbon/oxygen ratio in coal to igneous intrusions in the Somerset coal field, Colorado $ea study of the carbon-to-oxygen ratio in coals metamorphosed to higher than normal rank by igneous plutons /$fby John R. Dyni and David L. Gaskill
210  1$a[Reston, Va.] :$cUnited States Department of the Interior, Geological Survey,$d1980.
210  2$aWashington :$cUnited States Government Printing Office.
215   $a1 online resource (iv, 20 pages, 1 page of plates) $cillustrations, maps
225 1 $aGeological Survey bulletin ;$v1477-A
225 1 $aContributions to geochemistry
320   $aIncludes bibliographical references (pages 18-20).
517   $aRelation of the carbon/oxygen ratio in coal to igneous intrusions in the Somerset coal field, Colorado 
606   $aCoal$zColorado$xAnalysis
606   $aCoal$xAnalysis$2fast
607   $aColorado$2fast
615  0$aCoal$xAnalysis.
615  7$aCoal$xAnalysis.
700   $aDyni$b John R.$01397406
702   $aGaskill$b David L.
712 02$aGeological Survey (U.S.),
801  0$bCOP
801  1$bCOP
801  2$bOCLCO
801  2$bOCLCF
801  2$bGPO
906   $aBOOK
912   $a9910707835603321
996   $aRelation of the carbon$93486910
997   $aUNINA