http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
United States--west coast, Oregon--Washington, port of Portland, including Vancouver
Frequency varies: Semiannual, 49th ed., Feb. 3, 1996-53rd ed., Nov. 7, 1998
Inset: Multnomah Channel, southern part. Scale 1:10,000.
Includes source diagram, tidal information, and table of channel depths.
Latest issue consulted: 57th edition, Jan. 2005.
Numbering realigned 1974 to conform to a uniform US numbering system for all navigation charts.
FAA, AVN-530, NACO Distribution Division, Greenbelt, 20770