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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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17 abr 1970 año - Discovery of Dubnium (105) announced
Añadido al timeline:
Science H.W. timeline 1
By
kback19
30 oct 2018
0
0
353
fecha:
17 abr 1970 año
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~ 55 years ago
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