Revision history for entry Prawitz, Dag (1965). "Natural Deduction: A Proof-Theoretical Study" [PRANDA] |
| Time | Type | Notes |
| 2009-01-25T12:45:37 | update | System / admin update - |
Revision history for entry Prawitz, Dag (1965). "Natural Deduction: A Proof-Theoretical Study" [PRANDA] |
| Time | Type | Notes |
| 2009-01-25T12:45:37 | update | System / admin update - |