Journal of Combinatorial Theory, Series A, Volume 13
Volume 13, Number 1, July 1972
C. St. J. A. Nash-Williams: Simple Constructions for Balanced Incomplete Block Designs with Block Size Three. 1-6- Samuel Huang, Dov Tamari: Problems of Associativity: A Simple Proof for the Lattice Property of Systems Ordered by a Semi-associative Law. 7-13
- S. Sherman: Positive Definiteness and Positive Differences. 14-16
- E. Keith Lloyd: Riemann Surface Transformation Groups. 17-27
- William Graves: A Sheaf of Bicomodules over the Incidence Coalgebra. 28-39
- W. H. Mills: On the Covering of Pairs by Quadruples I. 55-78
- W. H. Mills: Three Mutually Orthogonal Latin Squares. 79-82
- Françoise Dejean: Sur un Théorème de Thue. 90-99
- B. R. McDonald: Diagonal Equivalence of Matrices over a Finite Local Ring. 100-104
- Jacqueline Shalhevet: A Characterization of Separating Distinguished Collections Containing the Maximum Number of Sets. 105-115
- W. G. Bridges: Near 1-Designs. 116-126
- Morris Plotkin: Decomposition of Hadamard Matrices. 127-130
- Henry B. Mann, Daniel Shanks: A Necessary and Sufficient Condition for Primality, and Its Source. 131-134
- David C. Kurtz: A Note on Concavity Properties of Triangular Arrays of Numbers. 135-139
- Hansraj Gupta: Restricted Solid Partitions. 140-144
- Norbert Sauer: On the Density of Families of Sets. 145-147
Volume 13, Number 2, September 1972
- Daniel I. Barnea: A Naturally Ordered Enumeration of Compositions. 149-154
- Jin Bai Kim: Idempotents in Symmetric Semigroups. 155-161
- Bruce Faaland: On the Number of Solutions to a Diophantine Equation. 170-175
- W. A. Beyer, M. B. Wells: Lower Bound for the Connective Constant of a Self-Avoiding Walk on a Square Lattice. 176-182
- Gustavus J. Simmons: An Extremal Problem in the Uniform Covering of Finite Sets. 183-197
- J. N. Srivastava: Some General Existence Conditions for Balanced Arrays of Strength t and 2 Symbols. 198-206
- I. M. Chakravarti, S. Ikeda: Construction of Association Schemes and Designs from Finite Groups. 207-219
- Richard M. Wilson: An Existence Theory for Pairwise Balanced Designs I. Composition Theorems and Morphisms. 220-245
- Richard M. Wilson: An Existence Theory for Pairwise Balanced Designs II. The Structure of PBD-Closed Sets and the Existence Conjectures. 246-273
- Bernt Lindström: A Theorem on Families of Sets. 274-277
- H. W. Gould: A New Symmetrical Combinatorial Identity. 278-286
- John Haigh: Random Equivalence Relations. 287-295
Volume 13, Number 3, November 1972
- Joseph B. Kruskal: The Theory of Well-Quasi-Ordering: A Frequently Discovered Concept. 297-305
- C. D. O'Shaughnessy: On Room Squares of Order 6m + 2. 306-314
- Harald Scheid: Über die Möbiusfunktion einer lokal endlichen Halbordnung. 315-331
- Charles C. Lindner: Finite Embedding Theorems for Partial Latin Squares, Quasi-groups, and Loops. 339-345
- P. Mani: Spheres with Few Vertices. 346-352
- Tina H. Straley: Construction of Steiner Quasigroups Containing a Specified Number of Subquasigroups of a Given Order. 374-382
- Joseph Kahane, Robert Marr: On a Class of Stochastic Pairing Processes and the Mycielski-Ulam Notions of Genealogical Distance. 383-400
- Melvin Tainiter: Generating Functions on Idempotent Semigroups II. Semilattice Variables and Independence. 401-421
- Anthony J. W. Hilton: A Simplification of Moore's Proof of the Existence of Steiner Triple Systems. 422-425
- I. M. Chakravarti, K. V. Suryanarayana: Partial Difference Sets and Partially Balanced Weighing Designs for Calibration and Tournaments. 426-431
- Michael Goldberg: The Space-Filling Pentahedra. 437-443
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