1937 | ||
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3 | Arnold F. Emch: Deducibility with Respect to Necessary and Impossible Propositions. J. Symb. Log. 2(2): 78-81 (1937) | |
1936 | ||
2 | Arnold F. Emch: Implication and Deducibility. J. Symb. Log. 1(1): 26-35 (1936) | |
1 | Arnold F. Emch: Addendum to the Article Implication and Deducibility. J. Symb. Log. 1(2): 58 (1936) |