File:Вертолёт капитана К. Антонова Санкт-Петербург, Россия, до 1911 года.jpg
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| Description |
Русский: Данное фото было использовано в статье «Геликоптер» опубликованной в седьмом томе «Военной энциклопедии», который был издан книгоиздательским товариществом И. Д. Сытина в 1912 году в столице Российской империи городе Санкт-Петербурге.
English: An early helicopter concept created by Captain Konstantin Aleksandrovich Antonov, circa 1910. This photograph was used in the article "Helicopter" in the seventh volume of the "Military Encyclopedia", which was published by the I. D. Sytin Publishing Association in 1912 in the capital of the Russian Empire, the city of St. Petersburg. |
| Date | before 1913 |
| Source |
English: "Military Encyclopedia", Volume 7, by Ivan Dmitrievich Sytin. (St. Petersburg, 1912). |
| Author | Unknown author |
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 11:52, 8 July 2017 | | 801 × 503 (67 KB) | Schekinov Alexey Victorovich (talk | contribs) | User created page with UploadWizard |
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