13:19Conversion, Obversion, and Contraposition (Categorical Logic)Philologick49.7K viewsView & Download
29:40Conversion, Obversion, and ContrapositionPhilosophy with Professor Parsons661 viewsView & Download
20:17A Crash Course in Formal Logic Pt 5d, Conversion, Obversion and ContrapositionPhilHelper29.9K viewsView & Download
22:276. Conversion, Obversion, and Contraposition with Solutions: Introduction to Logic by Copi & Cohen.Philo Bytes1.4K viewsView & Download
34:36Logic Categorical Propositions, Pt 3 - Conversion, Obversion, ContrapositionWayne Miller676 viewsView & Download
26:47Lessons in Logic 18: Conversion, Obversion, and ContrapositionTeacherOfPhilosophy95 viewsView & Download
