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1 янв 1600 г. - Napier's Bones

Описание:

It was invented by John Napier for multiplication, based on the ancient numerical scheme known as the Arabian lattice.

Добавлено на ленту времени:

13 сен 2017

Дата:

1 янв 1600 г.
Сейчас
~ 424 г назад