1. Independent axiomatizability of quasi-varieties of soluble groups

   • A. I. Budkin

   OriginalPaper Pages: 81 - 100

2. Matrix hierarchies of first-order languages and their applications

   • Yu M. Vazhenin

   OriginalPaper Pages: 101 - 110

3. Generalized semilattices and m-degrees of index sets. II

   • T. M. Kuz'mina

   OriginalPaper Pages: 110 - 119

4. Models of arithmetic in A-isols

   • V. L. Mikheev

   OriginalPaper Pages: 119 - 134

5. Orthogonally complete algebraic system

   • A. I. Omarov

   OriginalPaper Pages: 134 - 139

6. Löwenheim numbers for skeletons of varieties

   • A. G. Pinus

   OriginalPaper Pages: 140 - 148

7. Binary lie algebras without strong zero divisors

   • V. T. Filippov

   OriginalPaper Pages: 149 - 166