http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
compiled, edited, and published by the Geological Survey.
Relief shown by shading and spot heights.
Includes "Legend," "Source data," and "Population Key."
Scale 1:1,000,000. 1 in. equals approx. 16 miles ;