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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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21 oct 1939 año - Siemens produced the first commercial transmission electron microscope.
Añadido al timeline:
science
By
Tyrus
27 oct 2017
0
0
671
fecha:
21 oct 1939 año
Ahora mismo
~ 86 years ago
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