Columbia subject headings:
Harvard subject headings:
Putin, Vladimir Vladimirovich, 1952-
Russia (Federation)--Politics and government--1991-
Yeltsin, Boris Nikolayevich, 1931-2007
Princeton subject headings:
Putin, Vladimir Vladimirovich, 1952-
Russia (Federation)--Politics and government--1991-
Russia (Federation)--Politics and government--21st century.
Yeltsin, Boris Nikolayevich, 1931-2007.