Columbia subject headings:
Weapons--Poland.
World War, 1939-1945--Underground movements--Poland.
Harvard subject headings:
World War, 1939-1945--Equipment and supplies.
World War, 1939-1945--Underground movements--Poland.
Princeton subject headings:
Poland--History--Occupation, 1939-1945.
World War, 1939-1945--Equipment and supplies.
World War, 1939-1945--Underground movements--Poland.