Изонить Альфа Центавра
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![☢ Ядерная физика: искровой альфа-детектор. Сделай сам! [Олег Айзон]](https://sun9-52.userapi.com/y7i9qUGmPo2k25R-ySJsY2TPwVKwBF9PJ1EBEg/hfAVKB-Nnqc.jpg)
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