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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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21 Okt 1939 Jahr - Siemens produced the first commercial transmission electron microscope.
Zugefügt zum Band der Zeit:
science
By
Tyrus
27 Okt 2017
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0
669
Datum:
21 Okt 1939 Jahr
Jetzt
~ 86 years ago
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