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100   $a20140805d1977      uad            0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aNomenclature of Precambrian rocks in Colorado /$fby Ogden Tweto
210  1$a[Washington, D.C.] :$cUnited States Department of the Interior, Geological Survey,$d1977.
210  2$aWashington :$cUnited States Government Printing Office.
215   $a1 online resource (iii, 22 pages) $cmap
225 1 $aGeological Survey bulletin ;$v1422-D
225 1 $aContributions to stratigraphy
300   $a"An appraisal of existing nomenclature and measures needed for improvement."
320   $aIncludes bibliographical references (pages 16-22).
606   $aGeology$zColorado$vNomenclature
606   $aGeology, Stratigraphic$vNomenclature
606   $aGeology, Stratigraphic$yPrecambrian
606   $aGeology, Stratigraphic$2fast
606   $aPrecambrian Geologic Period$2fast
608   $aTerminology.$2fast
615  0$aGeology
615  0$aGeology, Stratigraphic
615  0$aGeology, Stratigraphic
615  7$aGeology, Stratigraphic.
615  7$aPrecambrian Geologic Period.
700   $aTweto$b Ogden$f1912-1983,$01393605
712 02$aGeological Survey (U.S.),
801  0$bCOP
801  1$bCOP
801  2$bOCLCO
801  2$bOCLCF
801  2$bGPO
906   $aBOOK
912   $a9910707718103321
996   $aNomenclature of Precambrian rocks in Colorado$93542632
997   $aUNINA