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035   $a(OCoLC)965753605$z(OCoLC)891600184
035   $a(OCoLC)995470000002455976
035   $a(EXLCZ)995470000002455976
100   $a20161210d1957      uy             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aStudies of longitudinal stream profiles in Virginia and Maryland /$fby John T. Hack
210  1$aWashington :$cUnited States Department of the Interior, Geological Survey,$d1957.
215   $a1 online resource (59 unnumbered pages) $cillustrations, maps +$e1 plate
225 1 $aGeological Survey professional paper 294-B
225 1 $aShorter contributions to general geology
320   $aIncludes bibliographical references (page 94) and index.
330   $a"Preliminary results of a study of the form of small river valleys in relation to geology. Some factors controlling the longitudinal profiles of streams are described in quantitative terms."
606   $aValleys$zVirginia
606   $aValleys$zMaryland
606   $aRivers$zVirginia
606   $aRivers$zMaryland
606   $aRivers$2fast
606   $aValleys$2fast
607   $aMaryland$2fast
607   $aVirginia$2fast
615  0$aValleys
615  0$aValleys
615  0$aRivers
615  0$aRivers
615  7$aRivers.
615  7$aValleys.
700   $aHack$b John T$g(John Tilton),$f1913-1991,$01400331
712 02$aGeological Survey (U.S.),
801  0$bOCLCE
801  1$bOCLCE
801  2$bOCLCQ
801  2$bCOP
801  2$bOCLCF
801  2$bGPO
906   $aBOOK
912   $a9910706246203321
996   $aStudies of longitudinal stream profiles in Virginia and Maryland$93502521
997   $aUNINA