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Member for
3 years 8 monthsAge: 14-18
Level: 9 класс
Language: Russian
(ru)
ID: 916469
16/04/2021
Country code: KZ
Country: Kazakhstan
Main content: Рентгеновское излучение (1347917)
Рентгеновские лучи
Other contents: Ядерная физика
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