TY - BOOK ID - 136075480 TI - Pro tem : presidents pro tempore of the United States Senate since 1789 AU - Erickson, Nancy. AU - Byrd, Robert C. AU - United States. PY - 2008 PB - Washington, D.C. : U.S. Government Printing Office, DB - UniCat KW - United States. KW - Presiding officers. KW - History. UR - https://www.unicat.be/uniCat?func=search&query=sysid:136075480 AB - "Biographical sketches of all U.S. Senate presidents pro tempore (those Senate members selected to fulfill certain duties in the absence of the vice president) from 1789 to the present"-- ER -