The calculation of the sound pickup on the roof of the Peter and Paul Fortress, Leningrad, 1942.


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The calculation of the sound pickup on the roof of the Peter and Paul Fortress, Leningrad, 1942.
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The calculation of the sound pickup on the roof of the Peter and Paul Fortress, Leningrad, 1942. - Black and white, The photo, the USSR, The Great Patriotic War, Historical photo
The Great Patriotic War Historical photo the USSR The photo Black and white
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