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Popular astronomy airy(1881) page 230 figure 59.png

page 230 figure 59 from Popular Astronomy(1881)

Автор

George Biddel Airy

Атрибуция

https://archive.org/details/popularastronomy00airyrich

Лицензия

Public domain

Источник

https://commons.wikimedia.org/wiki/File:Popular_astronomy_airy(1881)_page_230_figure_59.png