Columbia subject headings:
Aeronautics, Military--Canada--Psychological aspects--History.
Airmen--Training of--Canada--History.
Canada. Royal Canadian Air Force--Recruiting, enlistment, etc.--World War, 1939-1945.
World War, 1939-1945--Aerial operations, Canadian.
Harvard subject headings:
Aeronautics, Military--Canada--Psychological aspects--History.
Aeronautics, Military--Psychological aspects--History.
Airmen--Training of--Canada--History.
Canada. Royal Canadian Air Force--Recruiting, enlistment, etc.--World War, 1939-1945.
World War, 1939-1945--Aerial operations, Canadian.
Princeton subject headings:
Aeronautics, Military--Canada--Psychology--History.
Airmen--Training of--Canada--History.
Canada. Royal Canadian Air Force--Recruiting, enlistment, etc.--World War, 1939-1945.
World War, 1939-1945--Aerial operations, Canadian.