1996. 2011-11-09T18:54:33Z. 2015-10-21T15:05:21Z. United States Coast Survey. The Survey ; NOAA Distribution Branch, N/CG33, National Ocean Service. English. Public. Potomac River.
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1996. 2011-11-09T19:22:10Z. 2015-10-21T15:05:21Z. United States Coast Survey. The Survey ; NOAA Distribution Branch, N/CG33, National Ocean Service, distributor. English. Public. Potomac River and Dahlgren Region (Va.).
1998. 2011-11-09T20:35:34Z. 2015-10-21T15:05:23Z. United States Coast Survey. The Survey ; NOAA Distribution Division, N/ACC3, National Ocean Service, distributor. English. Public. Potomac River and Chesapeake Bay (Md. and Va.).
4. United States--east coast, Maryland--Virginia, Potomac River, lower Cedar Point to Mattawoman Creek
1998. 2011-11-09T19:24:27Z. 2015-10-21T15:05:22Z. United States Coast Survey. The Survey ; NOAA Distribution Division, N/ACC3, National Ocean Service, distributor. English. Public. Potomac River.