http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 online resource (vii, 80 pages) : maps.
"The DDI/RS would welcome comment, addressed either to the Chief or to the writer, Arthur Cohen."
"This material contains classified information affecting the national security of the United States within the meaning of the espionage laws, Title 18, US Code Sections 793, 794, and 798. The law prohibits its transmition or the revelation of its contents in any manner prejudicial to the safety or interest of the United States or for the benefit of any foreign government to the detriment of the United States."--redacted.