Columbia subject headings:
Political prisoners--Soviet Union--Periodicals.
Harvard subject headings:
Forced labor--Soviet Union--History--Periodicals.
Labor camps--Soviet Union--History--Periodicals.
Political prisoners--Soviet Union--Personal narratives--Periodicals.
Princeton subject headings:
Forced labor--Soviet Union--History--Periodicals.
Labor camps--Soviet Union--History--Periodicals.
Political prisoners--Soviet Union--Personal narratives--Periodicals.