Birdflight as the basis of aviation : a contribution towards a system of aviation, compiled from the results of numerous experiments made by O. and G. Lilienthal /
by Otto Lilienthal; with a biographical introduction and addendum by Gustav Lilienthal ; translated from the 2nd edited by A. W. Isenthal ; with 1 portrait, 94 illustrations and 8 litho. plates
- London : Longmans, Green, 1911
- xxiv, 142 p. : front. ; 24 cm.
Source: Purchase (DLC 434870), Feb. 27, 1933 Includes index