http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
79th ed., Jan. 27, 1996 (Correct through NM 4/96).
Relief shown by form lines, hachures, and spot heights.
"From British and United States surveys to 1959."
"Copyright 1996 by the United States Government. No copyright claimed under Title 17 U.S.C."
Includes tidal information and index to next larger scale charts.