Title: Igor Sikorsky, the Russian years
Subjects: Aeronautical engineers, Biography, Ilʹi︠a︡ Muromet︠s︡ (Bomber), Sikorsky, igor ivanovich, 1889-1972, Ilʹi͡a Muromet͡s (Bomber)
Places: Soviet Union
People: Igor Ivan Sikorsky (1889-1972)