http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
8th ed., Mar. 16, 2002 (Correct through NM 11/02).
prepared and published by the National Imagery and Mapping Agency.
Relief shown by contours and spot heights.
"From U.S. Navy surveys to 1960 and a British Admiralty chart to 1998."
"Copyright 2002 by the United States Government. No copyright claimed under Title 17 U.S.C."