1. Wanda Szmielew 1918–1976

   • Marek Kordos
   • Maria Moszyńska
   • Lesław W. Szczerba

   Announcement Pages: 241 - 244

2. Conference on Stanisław Leśniewski's Achievement

   • Stanisław J. Surma

   Report Pages: 247 - 248

3. Leśniewski's work and nonclassical set theories

   • F. G. Asenjo

   OriginalPaper Pages: 249 - 255

4. Categorial languages

   • M. J. Cresswell

   OriginalPaper Pages: 257 - 269

5. Descriptions in Russell's theory and in ontology

   • H. Hiż

   OriginalPaper Pages: 271 - 283

6. A propositional fragment of Leśniewski's ontology

   • Arata Ishimoto

   OriginalPaper Pages: 285 - 299

7. Quantifiers in ontology

   • Charles F. Kielkopf

   OriginalPaper Pages: 301 - 307

8. The meaning of the quantifiers in the logic of Leśniewski

   • Guido Küng

   OriginalPaper Pages: 309 - 322

9. Systems of Leśniewski's ontology with the functor of weak inclusion as the only primitive term

   • Czesław Lejewski

   OriginalPaper Pages: 323 - 349

10. On the relation between the partition of a whole into parts and the attribution of properties to an object

    • Kuno Lorenz

    OriginalPaper Pages: 351 - 362

11. Some preliminary suggestions for the mirroring of non-metaphysical modalities in Leśniewski's ontology

    • Judith M. Prakel

    OriginalPaper Pages: 363 - 376

12. The Fregean Axiom and Polish mathematical logic in the 1920^s

    • Roman Suszko

    OriginalPaper Pages: 377 - 380

13. Composition and division

    • John Woods
    • Douglas Walton

    OriginalPaper Pages: 381 - 406

14. A survey of Leśniewski's logic

    • V. Frederick Rickey

    OriginalPaper Pages: 407 - 426