Columbia subject headings:
Harvard subject headings:
Mennonites--Soviet Union--Clergy--Biography.
Mennonites--Soviet Union--History--20th century.
Soviet Union--Church history.
Toews, Aron P. (Aron Petrovich)--Diaries.
Princeton subject headings:
Mennonites--Soviet Union--Clergy--Biography.
Mennonites--Soviet Union--History--20th century.
Soviet Union--Church history.
Toews, Aron P. (Aron Petrovich)--Diaries.