Columbia subject headings:
Main River Valley (Germany)--History.
Spessart (Rhineland-Palatinate, Germany)--History.
World War, 1939-1945--Aerial operations.
World War, 1939-1945--Campaigns--Germany (West)--Spessart (Rhineland-Palatinate)
World War, 1939-1945--Campaigns--Germany--Main River Valley.
Harvard subject headings:
Main River Valley (Germany)--History.
Spessart (Rhineland-Palatinate, Germany)--History.
World War, 1939-1945--Aerial operations
World War, 1939-1945--Campaigns--Germany--Main River Valley.
World War, 1939-1945--Campaigns--Germany--Spessart (Rhineland-Palatinate)
Princeton subject headings:
Main River Valley (Germany)--History.
Spessart (Rhineland-Palatinate, Germany)--History.
World War, 1939-1945--Aerial operations.
World War, 1939-1945--Campaigns--Germany (West)--Main River Valley.
World War, 1939-1945--Campaigns--Germany (West)--Spessart (Rhineland-Palatinate)