LEADER 01662oam 2200457 450 001 9910707846503321 005 20161219153954.0 035 $a(CKB)5470000002468094 035 $a(OCoLC)885281961 035 $a(EXLCZ)995470000002468094 100 $a20140805d1980 ua 0 101 0 $aeng 135 $aurbn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 14$aThe river and the rocks $ethe geologic story of Great Falls and the Potomac River Gorge /$fby John C. Reed, Jr., Robert S. Sigafoos, and George W. Fisher 210 1$a[Reston, Va.] :$cUnited States Department of the Interior, Geological Survey,$d1980. 210 2$aWashington :$cUnited States Government Printing Office. 215 $a1 online resource (vii, 75 pages) $cillustrations 225 1 $aGeological Survey bulletin ;$v1471 320 $aIncludes bibliographical references (page 74). 517 $aRiver and the rocks 606 $aGeology$zGreat Falls of the Potomac (Md. and Va.)$vGuidebooks 606 $aNatural history$zGreat Falls of the Potomac (Md. and Va.)$vGuidebooks 607 $aGreat Falls of the Potomac (Md. and Va.)$vGuidebooks 615 0$aGeology 615 0$aNatural history 700 $aReed$b John Calvin$cJr.,$f1930-$01384915 702 $aFisher$b George Wescott$f1937- 702 $aSigafoos$b Robert Sumner$f1920- 712 02$aGeological Survey (U.S.), 801 0$bCOP 801 1$bCOP 801 2$bOCLCO 801 2$bOCLCA 801 2$bGPO 906 $aBOOK 912 $a9910707846503321 996 $aThe river and the rocks$93486328 997 $aUNINA