ESource—Prentice Hall's Engineering Source—provides a comprehensive, customizable introductory engineering and computing library. Featuring over 25 modules and growing, ESource allows professors to fully customize their textbooks through the ESource website. Professors are not only able to pick and choose complete modules, but also custom-build a freshman engineering text that matches their content needs and course organization exactly! Using the ESource online BookBuild system at www.prenhall.com/esource, they can view and select book chapters, change the sequence, instantly calculate the book's net (bookstore) price, request a free examination copy, and generate an ISBN for placing a bookstore order. They can also add your own course notes, syllabi, reference charts, or other favorite materials, including material from third-party publishers. ESource Access Card: 0-13-090400-7. Include this ISBN when setting up an ESource Bundle.