Textbook Networking in the Internet Age Alan Dennis ISBN: 978-0-471-20189-2 Hardcover 432 pages April 2002, ©2003 US $176.95 Add to Cart This price is valid for United States. Change location to view local pricing and availability. This is a Print-on-Demand title. It will be printed specifically to fill your order. Please allow an additional 5-6 days delivery time. The book is not returnable.