LEADER 01509nam  2200373   450 
001 9910706530103321
005 20171208131537.0
035   $a(CKB)5470000002457149
035   $a(OCoLC)1014340454
035   $a(EXLCZ)995470000002457149
100   $a20171208d1968      ua             0
101 0 $aeng
135   $aurbn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 14$aThe composite locks $eChesapeake & Ohio Canal National Monument /$fby Edwin C. Bearss
210  1$a[Washington, D.C.] :$cDivision of History, Office of Archeology and Historic Preservation, National Park Service, U.S. Department of the Interior,$d1968.
215   $a1 online resource (iii, 108 pages) $cillustrations
300   $a"March 31, 1968."
300   $a"Historic structures report, historical data section"--Cover.
320   $aIncludes bibliographical references.
517   $aComposite locks 
606   $aLocks (Hydraulic engineering)$zChesapeake and Ohio Canal (Md. and Washington, D.C.)$xDesign and construction
607   $aChesapeake and Ohio Canal (Md. and Washington, D.C.)$xHistory
615  0$aLocks (Hydraulic engineering)$xDesign and construction.
700   $aBearss$b Edwin C.$01391151
712 02$aUnited States.$bOffice of Archeology and Historic Preservation.$bDivision of History,
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910706530103321
996   $aThe composite locks$93444615
997   $aUNINA