1. Jerzy Łoś 1920–1998; Elements of Biography

   • Stanisław Balcerzyk
   • Wiktor Bartol
   • Agnieszka Wojciechowska-Waszkiewicz

   Biography Pages: 301 - 314

2. The Incompleteness of RGL

   • Edwin D. Mares

   OriginalPaper Pages: 315 - 322

3. On Modal Logics Characterized by Models with Relative Accessibility Relations: Part I

   • Stéphane Demri
   • Dov Gabbay

   OriginalPaper Pages: 323 - 353

4. A Common Abstraction of MV-Algebras and Abelian l-groups

   • Francesco Paoli

   OriginalPaper Pages: 355 - 366

5. A Complete and Consistent Formal System for Sortals

   • Max A. Freund

   OriginalPaper Pages: 367 - 381

6. On an Intuitionistic Modal Logic

   • G. M. Bierman
   • V. C. V. de Paiva

   OriginalPaper Pages: 383 - 416

7. On Self-Admissible Quasi-Characterizing Inference Rules

   • V. V. Rybakov
   • M. Terziler
   • C. Gencer

   OriginalPaper Pages: 417 - 428

8. Book Reviews

   BookReview Pages: 429 - 446