Note: If you are purchasing an electronic version, MasteringGeology does not come automatically with it. To purchase MasteringGeology, please visit www.masteringgeology.com or you can purchase a package of the physical text and MasteringGeology by searching for ISBN 0321937015. This trusted text, the market's best-seller, makes an often complex subject accessible to beginning students with a strong focus on readability and illustrations. It offers a meaningful, non-technical survey that is informative and up-to-date for learning basic principles and concepts.