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30 апр 1594 г. - back staff

Описание:

The backstaff is a navigational instrument that was used to measure the altitude of a celestial body, in particular the sun or moon.

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history project

Byomar cardeanas

13 ноя 2017

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452

Дата:

30 апр 1594 г.

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~ 431 г назад

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