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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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23 Okt 1902 Jahr - The phase-contrast microscope was invented
Zugefügt zum Band der Zeit:
Microscope
By
Tash
13 Dez 2017
0
0
364
Datum:
23 Okt 1902 Jahr
Jetzt
~ 123 years ago
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