Pro tem : presidents pro tempore of the United States Senate since 1789 /

Washington, D.C. : | Washington, DC : U.S. Government Publishing Office, | For sale by the Superintendent of Documents, U.S. Government Publishing Office. 2020 .
x, 115 pages : , "116th Congress, 2d Session." | Shipping list no.: 2021-0120-P. 28 cm..
9780160953705 | 0160953707

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Pro tem : presidents pro tempore of the United States Senate since 1789 /