Title: V nebe dvukh imperiĭ
Subjects: Military Aeronautics, History, Air pilots, Training of, Study and teaching, World War, 1914-1918, Aerial operations, Military and naval history, World War I (1914-1918), Aerial Military operations, World War (1914-1918) fast (OCoLC)fst01180746
Places: Russia (Federation), England
Time periods: 20th century