http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
maps : color ; sheets 74 x 57 cm. or smaller.
prepared by the Geological Survey for publication by the Defense Mapping Agency Hydrographic/Topographic Center.
Relief shown by contours and spot heights.
Includes elevation, adjoining sheets, and boundaries guides.