Modal logics connected with systems S4n of Sobociński Jerzy J. BlaszczukWieslaw Dziobiak OriginalPaper Pages: 151 - 164
On detachment-substitutional formalization in normal modal logics Wieslaw Dziobiak OriginalPaper Pages: 165 - 171
Generalized net structures of empirical theories. I Wolfgang BalzerJoseph D. Sneed OriginalPaper Pages: 195 - 211
Degrees of maximality of Klukasiewicz-like sentential calculi Grzegorz Malinowski OriginalPaper Pages: 213 - 228
A correction to the paper “On expandability of models of Peano arithmetic. I” Roman Murawski Erratum Pages: 237 - 237
The6th International Congress of Logic, Methodology and Philosophy of Science will be held in Hannover, Federal Republic of Germany, from August 22 to August 29, 1979 Announcement Pages: 239 - 239