Columbia subject headings:
Spain--History--Civil War, 1936-1939--Aerial operations.
Spain--History--Civil War, 1936-1939--Participation, Foreign.
Spain--History--Civil War, 1936-1939--Participation, German.
Spain--History--Civil War, 1936-1939--Regimental histories.
Harvard subject headings:
Germany. Luftwaffe. Legión Cóndor
Germany. Luftwaffe. Legión Cóndor--Pictorial works.
Spain--History--Civil War, 1936-1939--Aerial operations.
Spain--History--Civil War, 1936-1939--Participation, German--Pictorial works.
Spain--History--Civil War, 1936-1939--Participation, German.
Spain--History--Civil War, 1936-1939--Regimental histories--Pictorial works.
Spain--History--Civil War, 1936-1939--Regimental histories.
Princeton subject headings: