1. De syllogismo categorico, De differentiis topicis (fragment). Creator: Boethius, -524 Published / Created: [between 1150 and 1199]. Call Number: Beinecke MS 484.5 Image Count: 4 Resource Type: unspecified Found in: Beinecke Rare Book and Manuscript Library > De syllogismo categorico, De differentiis topicis (fragment).