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File:Transit of venus.JPG


English: First observation of the transit of Venus by William Crabtree in 1639. Photogravure from an old etching.
Česky: První pozorování přechodu Venuše Williamem Crabtree roku 1639. Hlubotisk ze staré rytiny.
Source "Essays in astronomy" - D. Appleton & company, 1900 ( w:LCCN 00004435)


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