| Facsimile of the frontispiece "The Systems of the World" in Riccioli: Almagestum Novum, 1651 | Frontispiece | | Photographic facsimile (reduced) of a page from a copy of Copernicus: De Revolutionibus, as "corrected" in the 17th century according to the directions of the Congregations of the Index in 1620 | p. 61 | | Photographic facsimile (reduced) of another "corrected" page from the same copy | p. 113 |
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