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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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31 März 1939 Jahr - siemens
Beschreibung:
siemens produced the first commercial transmission electron micrscope
Zugefügt zum Band der Zeit:
alex
By
Alexander Brusacoram
30 Okt 2017
0
0
521
Datum:
31 März 1939 Jahr
Jetzt
~ 86 years ago
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