| (179c)-(179d) | Summaries of articles published in this issue. |
| 179-183 | Tolerance in algebraic structures. Zelinka, Bohdan |
| 184-206 | The mixed product decompositions of partially ordered groups. Jakubík, Ján |
| 207-219 | Über eine nichtlineare Differentialgleichung dritter Ordnung. Voráček, Jan |
| 220-231 | On a certain relation for closure operation on a semigroup. Pondělíček, Bedřich |
| 232-242 | Mixed abelian groups of torsion free rank one. Bican, Ladislav |
| 243-245 | Ergodische Theorie der Engelschen und Sylvesterschen Reihen. Schweiger, Fritz |
| 246-250 | On the comparative growth of convex functions. Kamthan, P. K. |
| 251-302 | Régularité de l'évolution linéaire isochrone. Sova, Miroslav |
| 303-314 | Union and symmetry preserving endomorphisms of the semigroup of all binary relations on a set. Clifford, Alfred Hoblitzelle; Miller, D. D. |
| 315-326 | Sur la déformation projective des systèmes osculateurs d'une congruence de droites. Svoboda, Karel |
| 327 | Sur la bidéformation projective des congruences de droites. Svoboda, Karel |