Columbia subject headings:
Informers--Soviet Union--Biography.
Morozov, Pavlik, 1918-1932.
Soviet Union--Politics and government--1917-1936.
Harvard subject headings:
Informers--Soviet Union--Biography.
Morozov, Pavlik, 1918-1932
Soviet Union--Politics and government--1917-1936.
Princeton subject headings:
Informers--Soviet Union--Biography.
Morozov, Pavlik, 1918-1932.
Soviet Union--Politics and government--1917-1936.