History of astronomy
Ptolemy at SkyScript - The Life and Work of Ptolemy
Skyscript: The Life & Work of Ptolemy by Deborah Houlding
Extracts of Ptolemy on the country of the Seres (China) (English translation)
Cathay and the way thither--Vol. 1 / 162 ページ
Ptolemy's Tetrabiblos at LacusCurtius (English translation, with introductory material)
An online guide to using a star chart astronomy assets
Using a Star Chart
Inquisition documents, 1616 and 1633 resources
ESS 362 - HISTORY of ASTRONOMY - Gagné
Bellarmine's letter of 1615 mod letter
Modern History Sourcebook: Robert Bellarmine: Letter on Galileo's Theories, 1615
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