Stephan Olariu: Quasi-brittle graphs, a new class of perfectly orderable graphs. 143-153
Mario Salvetti: On the homotopy theory of complexes associated to metrical-hemisphere complexes. 155-177
J. W. Sander: On maximal antihierarchic sets of integers. 179-189
James H. Schmerl, William T. Trotter: Critically indecomposable partially ordered sets, graphs, tournaments and other binary relational structures. 191-205