http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sphere of Sacrobosco and its commentators
The Sphere of Johannes de Sacrobosco; Latin text.--The Sphere of Sacrobosco; English translation.--The Commentary of Robertus Anglicus; Latin text.--The Commentary of Robertus Anglicus; English translation.--The Commentary ascribed to Michael Scot; Latin text.--The Commentary by Cecco d'Ascoli; Latin text.--Anonymous commentary or glosses.--Appendixes.
Corpus of mediaeval scientific texts ; v. 2