Production(s): Shell Film Unit ,
Date de sortie: 1952-01-01
A documentary tracing the development of the helicopter from the original Da Vinci drawings to the modern versions actually in service in 1951..Production(s): Shell Film Unit ,
Date de sortie: 1952-01-01
A documentary tracing the development of the helicopter from the original Da Vinci drawings to the modern versions actually in service in 1951..cast(s): Tom Shirley ,