1. Busy choice sequences refraining formulas and modalities

   • Ming Xu

   OriginalPaper Pages: 267 - 301

2. A partially ordered extention of the integers

   • George Epstein
   • Helena Rasiowa

   OriginalPaper Pages: 303 - 332

3. Natural dualities for varieties ofn-valued łukasiewicz algebras

   • H. A. Priestley

   OriginalPaper Pages: 333 - 370

4. Joins of minimal quasivarieties

   • M. E. Adams
   • W. Dziobiak

   OriginalPaper Pages: 371 - 389

5. A complete minimal logic of the propositional contents of thought

   • Marek Nowak
   • Daniel Vanderveken

   OriginalPaper Pages: 391 - 410

6. Books received

   • Mark A. Brown
   • Jan Woleński
   • Adam Drozdek

   BookReview Pages: 411 - 424