[Aviation] Aeroplanes and aerodynamics, 11 titles: (1) Eiffel, G. Études sur L'Hélice Aérienne

Paris, Librairie Aéronautique, n.d. (2021). 1st ed. 2 vols. (text and plates). Orig. unif. hlinnen, w. many (full-p.) in-text ills. (2) Idem, Nouvelles Recherches sur la Résistance de L'Air et L'Aviation. Paris, H. Dunod and E. Pinat, 1914. 2 vols. (text and atlas). (3) Idem, Résistance de L'Air et L'Aviation. Paris, H. Dunod and E. Pinat, 1910. (4) A collection of La Vie au Grand Air, a French sport and leisure publication, from 1900, containing no. 73 through no. 123, bound together in one large volume.- and 5 similar.

In various conditions. Some bindings worn or loosening (one spine and one front cover detached). (total 11)