For Introductory Physical Geology Courses   From the renowned Lutgens/Tarbuck/Tasa team, the 12th Edition of Essentials of Geology continues to elevate its readability, art program, focus on basic principles and instructor flexibility. This revision incorporates what has historically made the text a best seller with a new active learning approach throughout each chapter, which offers students a structured learning path and provides a reliable, consistent framework for mastering the chapter concepts. It also includes new additions to its learning path, mobile field trips, and visual program. The full text downloaded to your computer With eBooks you can: search for key concepts, words and phrases make highlights and notes as you study share your notes with friends eBooks are downloaded to your computer and accessible either offline through the Bookshelf (available as a free download), available online and also via the iPad and Android apps. Upon purchase, you'll gain instant access to this eBook. Time limit The eBooks products do not have an expiry date. You will continue to access your digital ebook products whilst you have your Bookshelf installed.