Columbia subject headings:
Air defenses--Great Britain--History.
Airplanes--Radar equipment--History.
Bowen, E. G.
Physicists--Great Britain--Biography.
Harvard subject headings:
Radar--Great Britain--History.
World War, 1939-1945--Great Britain--Radar.
Princeton subject headings:
Air defenses--Great Britain--History.
Airplanes--Radar equipment--History.
Bowen, E. G.
Physicists--Great Britain--Biography.