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What Is a Digraph?. Robin J. Wilson is the author of Graphs: An Introductory Approach-A First Course in Discrete Mathematics, published by Wiley. John J. Watkins is the author of Graphs: An Introductory Approach-A First Course in Discrete Mathematics, published by Wiley.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.