1. Identities common to four abelian group operations with zero

   • David Kelly
   • R. Padmanabhan

   OriginalPaper Pages: 1 - 24

2. On the independent subsets of a closure system with singular dimension

   • E. C. Milner
   • M. Pouzet

   OriginalPaper Pages: 25 - 32

3. Products of lattice varieties

   • George Grätzer
   • David Kelly

   OriginalPaper Pages: 33 - 45

4. Large k-free algebras

   • I. Kříž
   • A. Pultr

   OriginalPaper Pages: 46 - 53

5. Iterated discriminator varieties have undecidable theories

   • Stanley Burris

   OriginalPaper Pages: 54 - 61

6. On subquasivariety lattices of some varieties related with distributive p-algebras

   • Wieslaw Dziobiak

   OriginalPaper Pages: 62 - 67

7. Tensor products and entropic varieties

   • Brian A. Davey
   • Gary Davis

   OriginalPaper Pages: 68 - 88

8. Hyperdiagonalizable algebras

   • Claudio Bernardi
   • Massimo Mirolli

   OriginalPaper Pages: 89 - 102

9. Guard modules

   • Ernest G. Manes

   OriginalPaper Pages: 103 - 110

10. Minimal group-universal varieties of semigroups

    • P. Goralčík
    • V. Koubek

    OriginalPaper Pages: 111 - 122

11. Epicomplete completely-distributivel-groups

    • Michael Darnel

    OriginalPaper Pages: 123 - 132

12. The free completely distributive lattice over a poset

    • W. R. Tunnicliffe

    OriginalPaper Pages: 133 - 135

13. Corrigendum

    Erratum Pages: 136 - 136