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001 9910712660703321
035   $a(CKB)5470000002495555
035   $a(EXLCZ)995470000002495555
100   $a20230509c2008uuuu  -u-            -
101 0 $aeng
200 10$aAllegheny Portage Railroad National Historic Site : geologic resource evaluation report
210   $aDenver, Colorado$cGeologic Resources Division, Natural Resource Program Center ;
517   $aAllegheny Portage Railroad National Historic Site 
906   $aBOOK
912   $a9910712660703321
996   $aAllegheny Portage Railroad National Historic Site : geologic resource evaluation report$93350158
997   $aUNINA