Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL United States. Congress. Senate. Committee on Finance,"$450 billion debt limit : hearing before the Committee on Finance, United States Senate, Ninety-second Congress, second session, on H.R. 12910, to provide for a temporary increase in the public debt limit, February 28, 1972",,Congressional Information Service,2000,"U.S. Congressional Committee Publications on GATT & WTO, 1949-1999",,,,https://cir.nii.ac.jp/crid/1130000796955406976