1. Axiomatizable classes with strong homomorphisms

   • S. S. Goncharov

   OriginalPaper Pages: 113 - 120

2. Countably-categorical Boolean algebras with distinguished ideals

   • D. E. Pal'chunov

   OriginalPaper Pages: 121 - 135

3. Ordered sets R and Q as bases of Kripke models

   • Mitio Takano

   OriginalPaper Pages: 137 - 148

4. Semi-Post algebras

   • Nguyen Cat Ho
   • Helena Rasiowa

   OriginalPaper Pages: 149 - 160

5. Subalgebras and homomorphisms of semi-Post algebras

   • Nguyen Cat Ho
   • Helena Rasiowa

   OriginalPaper Pages: 161 - 175

6. A note on syntactical and semantical functions

   • Adam Gajda
   • Michał Krynicki
   • Lesław Szczerba

   OriginalPaper Pages: 177 - 185

7. A simplification of a completeness proof of Guaspari and Solovay

   • Dick H. J. de Jongh

   OriginalPaper Pages: 187 - 192

8. Generic generalized Rosser fixed points

   • Dick H. J. de Jongh
   • Franco Montagna

   OriginalPaper Pages: 193 - 203

9. Books received

   • Janusz Czelakowski

   BookReview Pages: 205 - 207