The distribution of submersed aquatic vegetation in the fresh and oligohaline tidal Potomac River, 2005 [electronic resource] / by Nancy B. Rybicki ... [et al.].
Imprint
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2008.
Mode of access: Internet from the USGS web site. Address as of 8/13/08: http://pubs.usgs.gov/of/2008/1218/sav2005.pdf; current access available via PURL.
Note
Title from PDF title screen (viewed on Aug. 13, 2008).
