Columbia subject headings:
Harvard subject headings:
Communism--Greece--History--Documentation.
Communism--History--Documentation--Greece.
Communists--Greece--Biography
Communists--Greece--Correspondence.
Kommounistikon Komma tēs Hellados.
Zachariadēs, Kyros--Interviews.
Zachariadēs, Nikos, 1903-1973--Correspondence.
Zachariadēs, Nikos, 1903-1973.
Princeton subject headings:
Communism--Greece--History.
Communists--Greece--Biography.
Kommounistiko Komma Helladas.
Zachariadēs, Nikos, 1903-1973--Correspondence.
Zachariadēs, Nikos, 1903-1973--Exile--Russia--Siberia.
Zachariadēs, Nikos, 1903-1973.