Акустика. Часть 3 - поглощение, отражение, дифракция и рефракция
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![Медитация глубокого расслабления для быстрого восстановления сил – ШАВАСАНА [15 мин]](https://sun9-76.userapi.com/urMPzUVjXim3rWmFC1YEme48fhufMG5eY-ZnIw/VR214-zKt2s.jpg)
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