| (507a)-(507g) | Summaries of articles published in this issue. |
| 507-526 | A generalized maximum principle and estimates of max vrai $u$ for nonlinear parabolic boundary value problems. Kačur, Jozef |
| 527-540 | Generalized intervals and topology. Redfield, R. H. |
| 541-578 | Über einfache Mannigfaltigkeiten im linearen affinen Raum $A_n$ in globaler Auffassung. Nožička, František |
| 579-583 | Über approximative derivierte Zahlen monotoner Funktionen. Mišík, Ladislav |
| 584-595 | On non-additive measures of inaccuracy. Gupta, H. C.; Sharma, Bhu Dev |
| 596-603 | A generalization of Hamiltonian cycles for trees. Nebeský, Ladislav |
| 604-612 | On $E$-sequentially regular spaces. Frič, Roman |
| 613-627 | On convergence fields of regular matrix transformations. Šalát, Tibor |
| 628-631 | On infinitesimal isometries of surfaces in $E^4$. Švec, Alois |
| 632-635 | The semigroup of circulant Boolean matrices. Butler, Kim Ki-Hang; Schwarz, Štefan |
| 636-641 | Uniformly distributed sequences mod 1 and Cantor's series representation. Galambos, János |
| 642-652 | Strongly projectable lattice ordered groups. Jakubík, Ján |
| 653-665 | On the limit-3 classification of the square of a second-order, linear differential expression. Everitt, William Norrie; Giertz, Magnus |
| 666-670 | News and Notices. Professor Jiří Klapka dead. Obůrka, Oto |