ISBN 9783540060352 books & textbook
Combinatorics: Room Squares, Sum-Free Sets, Hadamard Matrices (Lecture Notes in Mathematics, 292)
Wallis, W. D. Street, Anne Penfold Wallis, Jennifer Seberry
Springer /1972-10-23 Paperback / 524 Pages
isbn-10: 3540060359 / isbn-13: 9783540060352
