1. On modal logic with an intuitionistic base

   • Gisèle Fischer Servi

   OriginalPaper Pages: 141 - 149

2. Modal logics connected with systems S4_n of Sobociński

   • Jerzy J. Blaszczuk
   • Wieslaw Dziobiak

   OriginalPaper Pages: 151 - 164

3. On detachment-substitutional formalization in normal modal logics

   • Wieslaw Dziobiak

   OriginalPaper Pages: 165 - 171

4. Complete rings of sets and sentential logic

   • Melven R. Krom

   BriefCommunication Pages: 173 - 175

5. An improvement of the deontic calculus DSC

   • Leon Gumański

   OriginalPaper Pages: 177 - 180

6. On expandability of models of Peano arithmetic. III

   • Roman Murawski

   OriginalPaper Pages: 181 - 188

7. Fuzzy propositional logic. Algebraic approach

   • Slava Meskhi

   OriginalPaper Pages: 189 - 194

8. Generalized net structures of empirical theories. I

   • Wolfgang Balzer
   • Joseph D. Sneed

   OriginalPaper Pages: 195 - 211

9. Degrees of maximality of Klukasiewicz-like sentential calculi

   • Grzegorz Malinowski

   OriginalPaper Pages: 213 - 228

10. Space, time and geometry

    • Janusz Plazowski

    Reviews Pages: 229 - 236

11. A correction to the paper “On expandability of models of Peano arithmetic. I”

    • Roman Murawski

    Erratum Pages: 237 - 237

12. 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

13. Corrigenda

    Erratum Pages: 240 - 240