Bifolium from a manuscript of the Viaticus by Constantinus Africanus, from a handbook for traveling doctors, translated from Arabic. Prior to 1875, Hermann Hagen detached it from a host volume from the Stadtbibliothek of Bern.(Florian Mittenhuber und Livia Sandri, 2018)
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Bern, Burgerbibliothek, Cod. 722.4, 1r – Constantinus Africanus: Viaticus