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035   $a(OCoLC)318813489
035   $a(EXLCZ)995470000002396473
100   $a20090420d1957      ua             0
101 0 $aeng
135   $aurmn||||a||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aReports and maps of the Geological Survey released only in the open files, 1956$b[electronic resource] /$fby Betsy A. Weld, William S. Eisenlohr, Jr., and Arthur Johnson
210  1$aWashington, D.C. :$cU.S. Dept. of the Interior, Geological Survey,$d1957.
215   $a12 pages $cDJVU, image file
225 1 $aGeological Survey circular ;$v401
300   $aTitle from title screen (viewed Apr. 20, 2009).
300   $aIncludes index.
608   $aBibliographies.$2lcgft
700   $aWeld$b Betsy A$01388375
701   $aEisenlohr$b William S$g(William Stewart)$cJr.,$f1907-1997.$01587170
701   $aJohnson$b Arthur$01389164
712 02$aGeological Survey (U.S.)
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910698738403321
996   $aReports and maps of the Geological Survey released only in the open files, 1956$93877397
997   $aUNINA