Greek and Roman astronomers
Ptolemy biography (Bill Arnett's site)
Ptolemy, the Man
Alexander Jones, "Ptolemy and his ''Geography''" chass
Ptolemy and His Geography
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)
The Astronomer Hipparchus of Rhodes - mentions Timocharis' contribution
Hipparchus the Astronomer
Windows to the Universe: Discover Mercury windows tour mercury
Discover Mercury
The www.froola.com spirit froola
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