Subjects: astronomer (sorted by popularity)

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Astronomy 5706 downloads
Astronomy, Ancient 2616 downloads
Astronomy, Medieval 2116 downloads
Dante Alighieri, 1265-1321 -- Knowledge -- Astronomy 2116 downloads
Astronomy -- History 1431 downloads
Astronomy -- Early works to 1800 854 downloads
Astronomy in the Bible 829 downloads
Astronomy -- Miscellanea 690 downloads
Astronomy -- Juvenile literature 594 downloads
Astronomers 460 downloads
Astronomical observatories -- Fiction 306 downloads
Astronomical photography 195 downloads
Astronomers -- Great Britain -- Biography 188 downloads
Astronomy -- Observers' manuals 176 downloads
Astronomers -- United States -- Biography 160 downloads
Meridians (Astronomy) -- Fiction 133 downloads
Astronomers -- Italy -- Biography 122 downloads
Women astronomers -- United States -- Biography 122 downloads
Astronomy -- Great Britain -- History -- 18th century 119 downloads
Astronomy -- Great Britain -- History -- 19th century 119 downloads
Milton, John, 1608-1674 -- Knowledge -- Astronomy 104 downloads
Astronomy in literature 104 downloads
Astronomy -- History -- 19th century 98 downloads
Astronomy -- Amateurs' manuals 97 downloads
Astronomy, Greek 95 downloads
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