e-Study Guide for Physical Geology: The Science of Earth, textbook by Chip Fletcher

e-Study Guide for: Spatial Modeling Principles in Earth Sciences by Zekai Sen, ISBN 9781402096716

e-Study Guide for Structural Geology, textbook by Haakon Fossen

e-Study Guide for Art History, Combined Volume, textbook by Marilyn Stokstad

e-Study Guide for Cultural Anthropology, textbook by Barbara Miller

e-Study Guide for Cultural Anthropology: An Applied Perspective, textbook by Gary Ferraro