1. Zur Rolle der Sprache in erkenntnistheoretischer Hinsicht

   • Paul Bernays

   Articles Pages: 185 - 200

2. Complementarity in quantum mechanics: A logical analysis

   • Hugo Bedau
   • Paul Oppenheim

   Articles Pages: 201 - 232

3. Information and entropy

   • Frank Tillman
   • B. Roswell Russell

   Articles Pages: 233 - 241

4. Non-deductive rules of inference and problems in the analysis of inductive reasoning

   • Nicholas Rescher

   Articles Pages: 242 - 251

5. Book reviews

   • J. J. M. Reesinck

   BookReview Pages: 252 - 253