"Introduction to Graph Theory" by Walker is a comprehensive textbook published in 2007 by Prentice Hall of India. This paperback book, written in English, covers the fundamentals of graph theory and is ideal for adult learners and university students studying this subject. With a weight of 1.94 pounds, this book provides a detailed introduction to graph theory concepts and is a valuable resource for those interested in delving deeper into this field. The author, Walker, offers a clear and informative approach to introducing readers to the world of graph theory.