Columbia subject headings:
Negretov, Pavel, 1923-2004.
Political prisoners--Soviet Union--Biography.
Prisoners--Russia (Federation)--Vorkuta (Komi)--Biography.
Harvard subject headings:
Negretov, Pavel, 1923-2004
Political prisoners--Soviet Union--Biography
Prisoners--Russia (Federation)--Vorkuta (Komi A.S.S.R.)--Biography.
Prisoners--Russia (Federation)--Vorkuta (Komi)--Biography.
Princeton subject headings:
Negretov, Pavel, 1923-
Political prisoners--Soviet Union--Biography.