| [2] | Contents. |
| 3-10 | On splitting $k$-systems. Kepka, T.; Niemenmaa, M. |
| 11-17 | Opérations dérivées des treillis orthomodulaires (Part 3). Šimon, J. |
| 19-21 | Some remarks to the axiom of prolongation. Čuda, Karel |
| 23-30 | Different types of products and subdirectly irreducible. Suková, E.; Vinárek, J. |
| 31-36 | Properties of operators related to the Boltzmann collision term. Chvála, František |
| 37-47 | Mechanical properties of some $Cu$-based alloys. Mencl, J. |
| 49-66 | General convolutions motivated by designs. Deza, M.; Rosenberg, I. |
| 67,80 | Sul la theorie de la dimension dans les hypergroupes. Freni, D. |