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100   $a20160708d1949      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aInterpreting ground conditions from geologic maps /$fprepared by the Geologic Division
210  1$aWashington, D.C. :$cUnited States Department of the Interior, Geological Survey,$d1949.
215   $a1 online resource (12 pages) $cillustrations, maps
225 1 $aGeological Survey circular ;$v46
300   $a"May 1949."
606   $aMap reading
606   $aGeological mapping
606   $aGeology$zTexas$zAlpine$vMaps
606   $aGeological mapping$2fast
606   $aGeology$2fast
607   $aTexas$zAlpine$2fast
608   $aMaps.$2fast
608   $aMaps.$2lcgft
615  0$aMap reading.
615  0$aGeological mapping.
615  0$aGeology
615  7$aGeological mapping.
615  7$aGeology.
712 02$aGeological Survey (U.S.),
801  0$bCOP
801  1$bCOP
801  2$bOCLCO
801  2$bOCLCF
801  2$bOCLCA
801  2$bGPO
906   $aBOOK
912   $a9910711539403321
996   $aInterpreting ground conditions from geologic maps$93294928
997   $aUNINA