| (1c)-(1j) | Summaries of articles published in this issue. |
| 1-10 | Cohomology and special extensions of groups. Garfinkel, Gerald S.; Wu, Yel-Chiang |
| 11-12 | Varieties of $l$-groups are torsion classes. Holland, W. Charles |
| 13-20 | Polarity compatible with a closure system. Šmarda, Bohumil |
| 21-26 | A note on some varieties of point algebras. Saade, Marshall |
| 27-52 | A contribution to the theory of stability of differential equations in Banach space. Neustupa, Jiří |
| 53-56 | p.p. rings and reduced rings. Szeto, George |
| 57-61 | Remarks on the rows and columns of $P$ in the matrix equation $A=PP^*$. Hartfiel, Darald J.; Smith, Patricia L. |
| 62-83 | $F$-quasigroups isotopic to Moufang loops. Kepka, Tomáš |
| 84-96 | Varieties of quasigroups determined by short strictly balanced identities. Ježek, Jaroslav; Kepka, Tomáš |
| 97-104 | Quasi-injective $S$-systems and their $S$-endomorphism semigroup. Lopez, Antonio M., Jr.; Luedeman, John K. |
| 105-112 | Nonuniqueness for the solutions of ordinary differential equations. Kalas, Josef |
| 113-115 | On summability in convergence groups. Kliś, Czesław |
| 116-129 | Über projektive Erweiterung affiner Klingenbergscher Ebenen. Machala, František |
| 130-141 | Products of uniform spaces. Hušek, Miroslav |
| 142-143 | A class of sets whose distance set fills an interval. Lee, Ken W. |
| 144-147 | The coefficient ring of the skew group ring. Osterburg, James |
| 148-152 | On the density of certain sets in arithmetical semigroups. Porubský, Štefan |
| 153-158 | A note on a result of Kendall. Dayanithy, Kandiah |
| 159-162 | Finite Abelian semigroups represented into the power set of finite groups. Lau, August |
| 163-168 | In memoriam Professor Jiří Fábera, corresponding member of the Czechoslovak Academy of Sciences. |