Frederick, John H.
Commercial air transportation / John H. Frederick - 3rd. ed. - Chicago : Irwin , 1951 - xiii, 473p. : ill. ; 25 cm.
Includes index.
Transport and communications
Air transport
Aeronautics, Commercial--United States
385 / FRE 2
Commercial air transportation / John H. Frederick - 3rd. ed. - Chicago : Irwin , 1951 - xiii, 473p. : ill. ; 25 cm.
Includes index.
Transport and communications
Air transport
Aeronautics, Commercial--United States
385 / FRE 2