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И.Я. Верченко (1 часть)

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Published on Apr 27, 2011

К 100-летию выдающегося русского математика, криптографа, педагога И.Я. Верченко.
2 часть - http://www.youtube.com/watch?v=Xzk8zE...
3 часть - http://www.youtube.com/watch?v=D5924J...

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