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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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27 окт 1880 г. - H. C. Gram developed improved staining methods (1880)
Добавлено на ленту времени:
Microscope
By
Kane Anderson
20 сен 2017
0
0
892
Дата:
27 окт 1880 г.
Сейчас
~ 145 г назад
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