Columbia subject headings:
Harvard subject headings:
Communists--Japan--Biography
Itō, Ritsu, 1913-1989.
Nihon Kyōsantō--Purges--History.
Nosaka, Sanzō, 1892-
Princeton subject headings:
Communists--Japan--Biography.
Itō, Ritsu, 1913-1989.
Nihon Kyōsantō--Purges--History.
Nosaka, Sanzō, 1892-1993.