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 | 1968 | |
|---|---|---|
| 3 |      | Hugues LeBlanc: Subformula Theorems for N-Sequents. J. Symb. Log. 33(2): 161-179 (1968) |
| 2 | | Hugues LeBlanc: A Simplified Account of Validity and Implication for Quantificational Logic. J. Symb. Log. 33(2): 231-235 (1968) |
| 1 | | Hugues LeBlanc: On Meyer and Lambert's Quantificational Calculus FQ. J. Symb. Log. 33(2): 275-280 (1968) |