18 Apr
2017
18 Apr
'17
5:22 a.m.
Der Vogelflug als Grundlage der Fliegekunst., by Otto Lilienthal 54565 [Subtitle: Ein Beitrag zur Systematik der Flugtechnik.] [Language: German] [Link: http://www.gutenberg.org/5/4/5/6/54565 ] [Files: 54565-8.txt; 54565-h.htm] Thanks to Jens Sadowski, Odessa Paige Turner, and the Online Distributed Proofreading Team at http://www.pgdp.net. This file was produced from images generously made available by The Internet Archive. Regards, Al