Columbia subject headings:
Harvard subject headings:
Political prisoners--Poland--Borowiec--Registers.
Political prisoners--Soviet Union--Registers.
Prisons--Poland--Borowiec--Registers.
World War, 1939-1945--Registers of dead--Poland.
Princeton subject headings:
Political prisoners--Poland--Borowiec--Registers.
Political prisoners--Soviet Union--Registers.
Prisons--Poland--Borowiec--Registers.
World War, 1939-1945--Registers of dead--Poland.