Columbia subject headings:
Church and state--Communist countries--History--20th century--Bibliography.
Church and state--Europe, Eastern--History--20th century--Bibliography.
Communism and Christianity--Communist countries--Bibliography.
Communism and Christianity--Europe, Eastern--Bibliography.
Communist countries--Church history--Bibliography.
Europe, Eastern--Church history--Bibliography.
Persecution--Communist countries--History--20th century--Bibliography.
Persecution--Europe, Eastern--History--20th century--Bibliography.
Harvard subject headings:
Church and state--Communist countries--History--20th century--Bibliography.
Church and state--Europe, Eastern--History--20th century--Bibliography.
Communism and Christianity--Communist countries--Bibliography.
Communism and Christianity--Europe, Eastern--Bibliography.
Communist countries--Church history--Bibliography.
Europe, Eastern--Church history--Bibliography.
Persecution--Communist countries--History--20th century--Bibliography.
Persecution--Europe, Eastern--History--20th century--Bibliography.
Princeton subject headings:
Church and state--Communist countries--History--20th century--Bibliography.
Church and state--Europe, Eastern--History--20th century--Bibliography.
Communism and Christianity--Communist countries--Bibliography.
Communism and Christianity--Europe, Eastern--Bibliography.
Communist countries--Church history--Bibliography.
Europe, Eastern--Church history--Bibliography.
Persecution--Communist countries--History--20th century--Bibliography.
Persecution--Europe, Eastern--History--20th century--Bibliography.