1. A Generalization of the Łukasiewicz Algebras

   • Teresa Almada
   • JÚlia Vaz de Carvalho

   OriginalPaper Pages: 329 - 338

2. On Consistent Subsets of Large Sets of Satisfiable Sentences

   • Stephen H. Hechler

   OriginalPaper Pages: 339 - 349

3. A Temporal Logic for Sortals

   • Max A. Freund

   OriginalPaper Pages: 351 - 380

4. A Necessary Relation Algebra for Mereotopology

   • Ivo DÜntsch
   • Gunther Schmidt
   • Michael Winter

   OriginalPaper Pages: 381 - 409

5. Priorean Strict Implication, Q and Related Systems

   • Fabrice Correia

   OriginalPaper Pages: 411 - 427

6. Book Reviews

   BookReview Pages: 429 - 455

7. Contents of Volume 69

   Volume Contents Pages: 457 - 458

8. Information for Authors

   Instructions for Authors Pages: 461 - 462