Columbia subject headings:
Monasteries--Soviet Union.
Prisoners--Soviet Union.
Prisons--Soviet Union.
Solovetski Islands (Russia)
Harvard subject headings:
Monasteries--Soviet Union.
Prisoners--Soviet Union.
Prisons--Soviet Union
Solovetski Islands (Russia)
Princeton subject headings:
Monasteries--Soviet Union.
Prisoners--Soviet Union.
Prisons--Soviet Union.
Solovetski Islands.