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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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27 oct 1880 año - H. C. Gram developed improved staining methods (1880)
Añadido al timeline:
Microscope
By
Kane Anderson
20 sep 2017
0
0
892
fecha:
27 oct 1880 año
Ahora mismo
~ 145 years ago
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