"This is a delightful little paperback which presents a day-by-day transcription of a course taught jointly by Pólya and Tarjan at Stanford University...One can count on [Pólya and Tarjan] for new insights and a fresh outlook. Both instructors taught by presenting a succession of examples rather than by presenting a body of theory...[The book] is very well suited as supplementary material for any introductory class on combinatorics; as such, it is very highly recommended. Finally, for all of us who like the topic and delight in observing skilled professionals at work, this book is entertaining and, yes, instructive, reading."
―Mathematical Reviews (Review of the original hardcover edition)
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"The mathematical community welcomes this book as a final contribution to honour the teacher G. Pólya."
―Zentralblatt MATH (Review of the original hardcover edition)