#261 Tractatus de Sphaera Mundi


TITLE: Tractatus de Sphaera Mundi

DATE:  1300-1500

AUTHOR:  Johannes de Sacrobosco [John Halifax of Holywood]

DESCRIPTION: see attached .pdf file, a 4-page monograph

Last Updated: 18 October 2014 


Email: jsiebold@me.com© Jim Siebold 2015