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Philosophiæ naturalis principia mathematica, [Frontispiece & title pag...
Public domain scan of 18th-century scientific book, illustration, free to use, no copyright restrictions image - Picryl description
Philosophiæ naturalis principia mathematica, title page
Public domain reproduction of illuminated book page, free to use, no copyright restrictions image - Picryl description
Athanasius Kircher - Empyreum ...
Public domain reproduction of artwork, free to use, no copyright restrictions image - Picryl description