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100   $a20020612d2002      ua             0
101 0 $aeng
135   $aurcn||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aQuality of economically extractable coal beds in the Gillette coal field as compared with other Tertiary coal beds in the Powder River Basin, Wyoming and Montana$b[electronic resource] /$fby Margaret S. Ellis
205   $aVersion 1.0.
210  1$a[Denver, Colo.] :$cU.S. Dept. of the Interior, U.S. Geological Survey,$d2002.
225 1 $aU.S. Geological Survey open-file report ;$v02-174
300   $aTitle from HTML title screen (viewed on June 12, 2002).
320   $aIncludes bibliographical references.
606   $aCoal$xQuality$zWyoming$zGillette Region
606   $aCoal$zPowder River Basin (Wyo. and Mont.)
615  0$aCoal$xQuality
615  0$aCoal
700   $aEllis$b Margaret S$g(Margaret Stamm),$f1950-$01383714
712 02$aGeological Survey (U.S.)
801  0$bGIS
801  1$bGIS
801  2$bGPO
906   $aBOOK
912   $a9910691614503321
996   $aQuality of economically extractable coal beds in the Gillette coal field as compared with other Tertiary coal beds in the Powder River Basin, Wyoming and Montana$93428923
997   $aUNINA