Mention953444
Download triples| rdf:type | qkg:Mention |
| so:text | The sailing flight of birds is the only form of flight which is carried on for some length of time without the expenditure of power. (en) |
| so:isPartOf | https://en.wikiquote.org/wiki/Otto_Lilienthal |
| so:description | The Romance of Aeronautics (1912) (en) |
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Triples where Mention953444 is the object (without rdf:type)
| qkg:Quotation903044 | qkg:hasMention |
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