Эрнст Руска и электронный микроскоп
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![Дружба - Freundschaft (1978) [Deutsch + Русский]](https://sun9-24.userapi.com/XlCi69oGiKRFYK5QsNK5zc3hEieczw4hjech0A/eEFFsa1U0-Y.jpg)
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