http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
National Park Service management of concession operations
joint hearings before certain subcommittees of the Committee on Government Operations and the Committee on Small Business, House of Representatives, Ninety-fourth Congress, first session, July 25 and 28, 1975
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United States. Congress. House. Committee on Government Operations