Resolutorium dubiorum circa celebrationem missarum occurrentium / [Johannes Heynlin]. [Straßburg] : [Johann Grüninger], 1500. Badische Landesbibliothek Karlsruhe,
6 in Dq 18,
https://nbn-resolving.org/urn:nbn:de:bsz:31-293418 / Public Domain Mark 1.0
