http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
distribution of submersed aquatic vegetation in the fresh and oligohaline tidal Potomac River, 2004
Title from PDF title screen (viewed on July 24, 2007).
Mode of access: Internet from the USGS web site. Address as of 11/28/07: http://pubs.usgs.gov/of/2007/1198/ofr20071198.pdf ; current access via PURL.
Includes bibliographical references (page 5).
U.S. Geological Survey open-file report ; 2007-1198