http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
hearing before the Subcommittee on Environmental Pollution of the Committee on Public Works, United States Senate, Ninety-Third Congress, second session, April 10, 1974
System requirements: PDF reader software.
United States. Congress. Senate. Committee on Public Works.