"Airplanes Motors." . . "Avions Moteurs." . . "Avions Propulsion par réaction." . . "Rockets (Aeronautics)." . . . . . . . . . . . . . "Principles of aircraft propulsion machinery" . "Principles of aircraft propulsion machinery"@en . . . . . . . "Principles of Aircraft Propulsion Machinery"@en . "Principles of Aircraft Propulsion Machinery" . . . . . . "Jet propulsion." . . . .