If you would like to cite this object in Wikipedia click to expand If you would like to cite this object in a Wikipedia article please use the following template: {{cite web |url=https://collection.sfomuseum.org/objects/1511924615/ |title=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 Otto Lilienthal ; with a biographical introduction and addendum by Gustav Lilienthal . |author=San Francisco International Airport Museum |accessdate=25 April 2024 |publisher=San Francisco International Airport Museum}}
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