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October 1977 ``Not both $p$ and $q$, therefore if $p$ then $q$'' is a valid form of argument.
S. K. Wertz
Notre Dame J. Formal Logic 18(4): 611-612 (October 1977). DOI: 10.1305/ndjfl/1093888129
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Vol.18 • No. 4 • October 1977
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