ARISTOTLE. De caelo et mundo. With commentary by Thomas Aquinas and Petrus de Alvernia; edited by Hermannus de Virsen. Woodcut text diagrams. 76 leaves. bound with: ALBERTUS MAGNUS. De coelo et mundo. Edited by Hieronymus de Monopoli. [1], 2-65, [1] leaves, including initial blank. and: ALBERTUS DE SAXONIA. Quaestiones in Aristotelis libros de caelo et mundo. Edited by Hieronymus Surianus. [52] leaves, including final blank. Together, 3 volumes in one, all printed in Gothic type. Folio, 312x216 mm, contemporary binding of beech boards with leather stripped from spine exposing alum-tawed leather sewing supports, outer half of front cover and front free paper missing, rear cover loose; tiny wormholes through covers and front and back of contents not impairing legibility, occasional marginal soiling, some light dampstaining in lower margins, scattered early marginalia; modern 1/4 morocco folding case. Early ownership inscription of Johannes Baptista Catius of Novara on second leaf of first work; 18th-century owners' inscriptions on initial blank of the second work and title of the third. (Venice: Bonetus Locatellus for Octavianus Scotus, 18 August 1495); (Venice: Johannes and Gregorius de Gregoriis, 18 November 1490); (Venice: Bonetus Locatellus for Octavianus Scotus, 24 October 1492)