http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
by George P. Woollard and Mohammad Asadullah Khan.
"Prepared for Aeronautical Chart and Information Center, United States Air Force... Contract F23601-71-C-0187."
Aeronautical Chart and Information Center (U.S.).