De conservanda juventute et retardanda senectute

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Roger Bacon (1220?-1292) : De conservanda juventute et retardanda senectute [latin].

  • Incipit : Serenissimo ac sapientissimo principi inclito domino Roberto... (Source : Manuscripta medica)
  • Explicit : ... iet Sicilie Regis illustris cui subiciantur omnia impia nacionum Amen. Sanctus Silvester dignetur sistere vester verus protector et in omni tempore rector. (Source : Manuscripta medica)

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