United States Government: Principles in Practice 6 Year Subscription Interactive Online Edition, Student Access United States Government: Principles in Practice Interactive Online Editions include all of the content of the textbook, plus ancillary items and interactive elements, such as animations, simulations, video, and quizzes. Grades: 9-12 Material Type: Student Materials Format: Online ISBN-13/EAN: 9780554009483 ISBN-10: 055400948X Product Code: 1206539 National/State: National Copyright Year: 2010