Revision history for entry McGee, Vann (1985). "``A Counterexample to Modus Ponens"" [MCGACT-2] |
| Time | Type | Notes |
| 2010-11-29T13:28:46 | add |
Revision history for entry McGee, Vann (1985). "``A Counterexample to Modus Ponens"" [MCGACT-2] |
| Time | Type | Notes |
| 2010-11-29T13:28:46 | add |