Урок 387. Принципы радиосвязи. Распространение волн различных диапазонов
Урок физики в Ришельевском лицее
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![Притчи Лао-Цзы: Уроки Мудрости и Гармонии | [NikOsho]](https://sun9-80.userapi.com/QxgCyl6mwbqgOM_yDmprPweyUK23hVLO38KRxQ/ei_j-wMhf18.jpg)
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