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Journal of Combinatorial Theory, Series A, Volume 11
Volume 11, Number 1, July 1971
- K. Walker:

An Upper Bound for the Ramsey Number M(5, 4). 1-10 - M. N. Vartak, G. A. Patwardhan:

The 2-Adjugate mod 2 Class of Designs. 11-26 - I. J. Good:

The Factorization of a Sum of Matrices and the Multivariate Cumulants of a Set of Quadratic Expressions. 27-37 - K. A. Bush:

Unbalanced Hadamard Matrices and Finite Projective Planes of Even Order. 38-44 - W. Bonnice, Leroy M. Kelly:

On the Number of Ordinary Planes. 45-53 - T. V. Narayana, R. M. Mathsen, J. Sarangi:

An Algorithm for Generating Partitions and Its Applications. 54-61 - Jin Bai Kim:

On the Structure of Linear Semigroups. 62-71 - M. L. Narayana Rao, D. J. Rodabaugh, F. W. Wilke, J. L. Zemmer:

A New Class of Finite Translation Planes Obtained from the Exceptional Near-Fields. 72-92 - Marshall Saade:

Generating Operations of Point Algebras. 93-100 - J. F. Lawless:

Note on a Family of BIBD's and Sets of Mutually Orthogonal Latin Squares. 101-105 - Svein Mossige:

Constructive Theorems for the Truth Table of the Ford Sequence. 106-110
Volume 11, Number 2, September 1971
- Johanan Schönheim:

A Generalization of Results of P. Erdös, G. Katona, and D. J. Kleitman concerning Sperner's Theorem. 111-117 - Carl Maneri, Robert Silverman:

A Combinatorial Problem with Applications to Geometry. 118-121 - S. G. Williamson:

Symmetry Operators of Kranz Products. 122-138 - J. F. Lawless:

An Investigation of Bhattacharya-Type Designs. 139-147 - Germain Kreweras:

Les couples "partie-partition" et certains dénombrements qui s'y rattachent. 148-156 - David J. Foulis, C. H. Randall:

Lexicographic Orthogonality. 157-162 - Alun O. Morris:

Generalizations of the Cauchy and Schur Identities. 163-169 - Melvin Tainiter:

Incidence Algebras on Generalized Semigroups I. 170-177 - Jean-Marie Goethals:

On the Golay Perfect Binary Code. 178-186 - N. S. Mendelsohn:

Latin Squares Orthogonal to their Transposes. 187-189 - William O. Alltop:

Some 3-Designs and a 4-Design. 190-195 - D. P. Roselle, T. C. Thomasson Jr.:

On Generalized Langford Sequences. 196-199
Volume 11, Number 3, November 1971
- George E. Martin:

Symmetric Gobos in a Finite Projective Plane. 201-207 - F. Buekenhout:

An Axiomatic of Inversive Spaces. 208-212 - Nguyen-Huu-Bong:

Some Combinatorial Properties of Summation Operators. 213-221 - William H. Graves:

A Categorical Approach to Combinatorial Geometry. 222-232 - J. G. Kalbfleisch, R. G. Stanton, Joseph Douglas Horton:

On Covering Sets and Error-Correcting Codes. 233-250 - Benjamin Halpern:

Almost Fixed Points for Subsets of Zn. 251-257 - L. Carlitz, D. P. Roselle, R. A. Scoville:

Some Remarks on Ballot-Type Sequences of Positive Integers. 258-271 - Michael Aschbacher:

On Collineation Groups of Symmetric Block Designs. 272-281 - G. M. Saha, M. N. Das:

Construction of Partially Balanced Incomplete Block Designs through 2n Factorials and Some New Designs of Two Associate Classes. 282-295 - Jennifer Wallis:

Amicable Hadamard Matrices. 296-298 - Edward Spence:

Some New Symmetric Block Designs. 299-302 - Roger C. Entringer, Douglas E. Jackson:

Matrices Permutable to * Matrices. 303-306 - Neal Zierler:

Trinomials with Non-Conjugate Roots of the Same Prime Order. 307-309

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