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A predicate calculus with formulas which lose sense and the corresponding propositional calculus
Krystyna Piróg-Rzepecka
Bulletin of the Section of Logic , 2 /1 (1973) s. 22-27
Krystyna Piróg-Rzepecka
Bulletin of the Section of Logic
, 2
/1
(1973)
s. 22-27