## Volume 1 (1990)

• L. Caccetta and S. Mardiyono
• L. Caccetta and Purwanto
• Deficiencies and vertex clique covering numbers of a family of trees, p.15
• D. Chen and D.R. Stinson
• Recent results on combinatorial constructions for threshold schemes, p.29
• R.J. Clarke
• A note on the cycle index polynomial of the symmetric group, p.49
• E. Dawson, J. Asenstorfer and P. Gray
• Warwick de Launey
• On the construction of $n$-dimensional designs from 2-dimensional designs, p.67
• Diane Donovan
• Ken Gray
• Further results on smallest defining sets of well known designs, p.91
• C.C. Lindner
• How to construct a block design with block size four admitting a blocking set, p.101
• Paul Moore and Rolf Rees
• On the number of connecting lines determined by $n$ points in the real plane, p.127
• Christine M. O'Keefe
• William D. Palmer
• Generalized Bhaskar Rao designs with two association classes, p.161