Columbia subject headings:
Poland--History--Occupation, 1939-1945.
Służba Budowlana (Labor organization)
World War, 1939-1945--Conscript labor--Poland.
Harvard subject headings:
Poland--History--Occupation, 1939-1945
Służba Budowlana (Labor organization)
World War, 1939-1945--Conscript labor--Poland.
Princeton subject headings:
Forced labor--Poland.
Poland--History--Occupation, 1939-1945.
Service, Compulsory non-military--Poland.