Bacon, Roger, 1214?-1294
Online books by this author are available.
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The Voynich Manuscript: An Elegant Enigma (Fort George G. Meade, MD: National Security Agency/Central Security Service, 1978), by M. E. D'Imperio (page images at HathiTrust)- La Synthèse Doctrinale de Roger Bacon (Etudes de Philosophie Medievale #5, in French; Paris: J. Vrin, 1924), by Raoul Carton (page images at HathiTrust; US access only)
- L'Expérience Mystique de l'Illumination Intérieure chez Roger Bacon (Etudes de Philosophie Medievale #3, in French; Paris: J. Vrin, 1924), by Raoul Carton (page images at HathiTrust; US access only)
- L'Expérience Physique chez Roger Bacon: Contribution a l'Étude de la Méthode et de la Science Expérimentales au XIIIe Siècle (Etudes de Philosophie Medievale #2, in French; Paris: J. Vrin, 1924), by Raoul Carton (page images at HathiTrust; US access only)
- Roger Bacon, by John Edwin Sandys (multiple formats at archive.org)
- The Cure of Old Age, and Preservation of Youth (with Arrais's Arbor Vitae; London: Printed for T. Flesher and E. Evets, 1683), by Roger Bacon, trans. by Richard Browne, contrib. by Duarte Madeira Arrais
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