1. Logical Empiricism

   Communications Of The Institute For The Unity Of Science Pages: 457 - 457

2. Logical Empiricism I

   • Phillipp Frank

   Communications Of The Institute For The Unity Of Science Pages: 458 - 465

3. Postscript by Prof. Clay

   • J. Clay

   Communications Of The Institute For The Unity Of Science Pages: 465 - 465

4. Remarks on M. Schlick's essay “positivism and realism”

   • D. Rynin

   Communications Of The Institute For The Unity Of Science Pages: 466 - 477

5. Positivism and realism

   • M. Schlick

   Communications Of The Institute For The Unity Of Science Pages: 478 - 505

6. Some notes on research on the role of models in the natural and social sciences

   • Karl Wolfgang Deutsch

   Communications Of The Institute For The Unity Of Science Pages: 506 - 533

7. Individuum, Gesellschaft Und Staat

   • Emil J. Walter

   Applied Logic Pages: 536 - 549

8. Le plus ancien testament romain

   • Henri Lévy-Bruhl

   Communications De L'Institut Français De Sociologie Pages: 552 - 553

9. Les conditions sociologiques de la proscription de la guerre

   • L. Kopelmanas

   Communications De L'Institut Français De Sociologie Pages: 554 - 557

10. The concept of evolution

    • J. Clay

    Dutch Section Of The International Association For Logic And The Philosophy Of Science Pages: 560 - 574