Revision history for entry Anderson, Alan Ross; Belnap Jr, Nuel D. (1962). "The pure calculus of entailment" [ANDTPC] |
| Time | Type | Notes |
| 2011-02-21T20:16:58 | update |
Revision history for entry Anderson, Alan Ross; Belnap Jr, Nuel D. (1962). "The pure calculus of entailment" [ANDTPC] |
| Time | Type | Notes |
| 2011-02-21T20:16:58 | update |