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    Aeronautical Progress 1930–1936

    A Review of Scientific Progress Given in the James Forrest Lecture
    Relf, E.F. | Emerald Group Publishing | 1936

    Aeronautical Progress 1930–1936

    A Review of Scientific Progress Given in the James Forrest Lecture
    Relf, E.F. | Emerald Group Publishing | 1936

    Modern developments in design of aeroplanes

    Relf, E.F. | Engineering Index Backfile | 1936

    Some Drag Problems of the Moment

    A Review of Existing Knowledge with Some Important Matters Still Requiring Attention
    Relf, E.F. | Emerald Group Publishing | 1939

    Modern developments in design of aeroplanes

    Relf, E.F. | Engineering Index Backfile | 1936

    Some drag problems of moment

    Relf, E.F. | Engineering Index Backfile | 1939

    Modern developments in design of aeroplanes

    Relf, E.F. | Engineering Index Backfile | 1936

    Aerodynamic Research in 1930

    The Progress made during the Year with Special Reference to Wind Tunnel Design and Fluid Flow
    Relf , E.F. A.R.C.Sc.,F.R.Ae.S. | Emerald Group Publishing | 1931