http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Waterborne transportation lines of the United States
electronic text, volumes : HTML, digital, PDF file.
Vol. 1. National summaries -- v. 2. Vessel company summary -- v. 3 Vessel characteristics.
compiled under the supervision of the Institute for Water Resources, U.S. Army Corps of Engineers.
Latest issue consulted: Calendar year 2009.