| (1c)-(1h) | Summaries of articles published in this issue. | 
| 1-12 | Extensions of ordered semigroups. Hulin, Adam J. | 
| 13-19 | Almost Floquet and generalized almost Floquet systems. Freedman, Herbert I.; Mallet-Paret, John J. | 
| 20-29 | Free constructions of 2-structures. Bureš, Jarolím | 
| 30-36 | О размерности ird, определенной с помощью ретракций. Kurovskiĭ, A. B.; Smirnov, Yu. M. | 
| 37-41,42 | О расположении компактов в Гильбертовом пространстве. Bogatyĭ, Semeon A.; Smirnov, Yuriĭ Mikhaĭlovich | 
| 55-64 | Limits and colimits in generalized algebraic categories. Adámek, Jiří | 
| 65-70 | On the weakly almost periodic solutions of certain abstract differential equations. Rao, Aribindi Satyanarayan | 
| 71-83 | Generic properties of parametrized vectorfields. II. Medveď, Milan | 
| 84-92 | Interpolation in a Banach space. Milota, Jaroslav | 
| 93-100 | Torsion theory for lattice-ordered groups Part II: Homogeneous $l$-groups. Martinez, Jorge | 
| 101-107 | Eine Bemerkung über eine Koordinatisierung der Translationsebenen. Klouda, Josef | 
| 108-127 | Homomorphisms of partial unary algebras. Kopeček, Oldřich | 
| 128-136 | The lattice of topologies of topological $l$-groups. Šmarda, Bohumil | 
| 137-144 | The adjacency graphs of a complex. Dewdney, A. K.; Harary, Frank | 
| 145-153 | On coverings of almost Dedekind domains. Porubský, Štefan | 
| 154-160 | On symmetric derivatives and on properties of Zahorski. Kundu, N. K. | 
| 161-170 | Positive functions from $\mathcal{S}$-indecomposable semigroups into partially ordered sets. Putcha, Mohan S. | 
| 43,44-54 | Homomorphisms of nets of fixed degree, with singular points on the same line. Havel, Václav |