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| Licence | Public Domain Mark | | Usage | Available for free download. In the event of reproduction or exploitation of the document or parts thereof, the holding institution asks you, in accordance with usual scientific practices, to provide:
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| | Reference | Der Vogelflug als Grundlage der Fliegekunst : ein Beitrag zur Systematik der Flugtechnik ... Berlin : R. Gaertners Verlagsbuchhandlung ; Hermann Heyfelder, 1889. ETH-Bibliothek Zürich, Rar 4730, http://doi.org/10.3931/e-rara-24491 / Public Domain Mark |
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Der Vogelflug als Grundlage der Fliegekunst [42.19 mb]