Columbia subject headings:
Harvard subject headings:
Poland. Polskie Siły Zbrojne. Armia Krajowa
Silesia, Upper (Poland and Czech Republic)--History.
World War, 1939-1945--Underground movements--Silesia, Upper (Poland and Czechoslovakia)
Princeton subject headings:
Poland. Polskie Siły Zbrojne. Armia Krajowa
Silesia, Upper (Poland and Czech Republic)--History.
World War, 1939-1945--Underground movements--Silesia, Upper (Poland and Czech Republic).