FLUGTECHNISCHE AUSBLICKE / ZUR KLÄRUNG DER LUFTWIDERSTAND FRAGEN , by P. W. Lippert. Transcript of a Lecture on FLIGHT AIR RESISTANCE given at the Austrian Department of Machine Engineers on November 19, 1890. WIEN [VIENNA]: Verlag des Verfassers, 1891. Large Format Booklet, 10x13 inches (26x34 cm), 12 pages. TEXT IN GERMAN. Illustrated with numerous in text charts and illustrations in text. "Separate reprint from the weekly paper of the Austrian Association of Engineers and Architects, No. 26, 27, 28, 29 and 30, 1891." From a lecture held in the Department of Machine Engineers on November 19, 1890, on the clarification of air resistance questions. P. W. Lippert was an Austrian Engineer. Only FAIR CONDITION:

Wear and soiling to wrappers; horizontal fold across the middle with a 2 inch tear starting at the its front edge (the fold is tender and the 2 inch tear will increase in size if the pages are not opened carefully) and a smaller tear and wear at its rear edge; some other wear, chips and closed tears to edges here and there; the printing remains bright, clear and unmarked. Scarce Technical Document from the Early Days of Flight by a Noted Austrian Aviation Engineer. Please Note: This large format booklet will be shipped folded, as is its normal state.