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Member for
3 years 9 monthsAge: 14-17
Level: 9 класс
Language: Russian
(ru)
ID: 710924
10/02/2021
Country code: KZ
Country: Kazakhstan
Main content: Гармонические колебания (1274177)
From worksheet author:
тест проверка знаний
Other contents:
Колебания и волны
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