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Почему «Х» означает неизвестное?
4,340,717 views |
Терри Мур |
TED2012
• February 2012
Read transcript
Почему «X» является символом для неизвестного? В этом коротком и весёлом выступлении Терри Мур даёт неожиданный ответ.
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