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Description1872 All-Russian Technical Exhibition in Moscow.jpg
English: 1872 All-Russian Technical Exhibition in Moscow by Ivan Dyagovchenko which started the Polytechnic Museum. Exhibited work by Olga Fenchenko et al et al
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.
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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2 January 1872Gregorian
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9450955f32196e3129b315b610b099918c03204c
determination method: SHA-1
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480 pixel
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551 pixel
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16:30, 16 November 2015
551 × 480 (107 KB)
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