Columbia subject headings:
Ezhov, Nikolaĭ Ivanovich, 1895-1940.
I︠A︡goda, Genrikh, 1891-1938.
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--Purges.
Soviet Union--Politics and government--1936-1953.
Soviet Union. Narodnyĭ komissariat vnutrennikh del.
Harvard subject headings:
Ezhov, Nikolaĭ Ivanovich, 1895-1940.
I︠A︡goda, Genrikh, 1891-1938
Political purges--Soviet Union.
Soviet Union. Narodnyĭ komissariat vnutrennikh del--History.
Princeton subject headings:
Ezhov, Nikolaĭ Ivanovich, 1895-1940.
I︠A︡goda, Genrikh, 1891-1938.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--Purges.
Political purges--Soviet Union--History.
Soviet Union. Narodnyĭ komissariat vnutrennikh del--Officials and employees--Biography.