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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 jan 1935 ano - М. Кнолль предложил анализатор электронной трубки
Adicionado na linha do tempo:
Электронный микроскоп. История
By
Вера Черепанова
15 nov 2017
0
0
606
Data:
1 jan 1935 ano
Agora
~ 90 years ago
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