Columbia subject headings:
Harvard subject headings:
Germany--Armed Forces--Equipment.
PzKpfw IV (Tank)--History.
PzKpfw IV (Tank)--Pictorial works.
World War, 1939-1945--Tank warfare
Princeton subject headings:
Germany--Armed Forces--Equipment.
PzKpfw IV (Tank)--History.
PzKpfw IV (Tank)--Pictorial works.
World War, 1939-1945--Tank warfare.