Columbia subject headings:
Christianity and politics--History--20th century.
Church and state--Oriental Orthodox churches--History--20th century.
Church and state--Orthodox Eastern Church--History--20th century.
Communism and Christianity--History--20th century.
Oriental Orthodox churches--Doctrines--History--20th century.
Orthodox Eastern Church--Doctrines--History--20th century.
Harvard subject headings:
Christianity and politics--History--20th century
Christianity and politics--Oriental Orthodox churches--History--20th century.
Christianity and politics--Orthodox Eastern Church--History--20th century.
Church and state--Oriental Orthodox churches--History--20th century.
Church and state--Orthodox Eastern Church--History--20th century.
Communism and Christianity--History--20th century.
Oriental Orthodox churches--Doctrines--History--20th century.
Oriental Orthodox churches--History--20th century.
Orthodox Eastern Church--Doctrines--History--20th century.
Orthodox Eastern Church--History--20th century.
Princeton subject headings:
Christianity and politics--History--20th century.
Church and state--Oriental Orthodox churches--History--20th century.
Church and state--Orthodox Eastern Church--History--20th century.
Communism and Christianity--History--20th century.
Oriental Orthodox churches--Doctrines--History--20th century.
Orthodox Eastern Church--Doctrines--History--20th century.