Graphs: An Introductory Approach––A First Course in Discrete Mathematics
by Robin J. Wilson, John J. Watkins
ISBN 13: 9780471615545
Format: Hardcover (352 pages) Publisher: John Wiley & Sons Published: 23 May 1990
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Topics in Commutative Ring Theory
by John J. Watkins
ISBN 13: 9780691127484
Format: Hardcover (232 pages) Publisher: Princeton University Press Published: 02 Jul 2007
Across the Board: The Mathematics of Chessboard Problems (Princeton Puzzlers)
ISBN 13: 9780691154985
Format: Paperback (272 pages) Publisher: Princeton University Press Published: 22 Jul 2012