6 Year Subscription Interactive Online Edition Houghton Mifflin Harcourt Modern Chemistry® A highly visual and engaging learning resource that contains the entire Student Edition, student resources, audio in MP3 format, activities, tools, and resources including Holt Online Assessment. Grades: 9-12 Material Type: Student Materials Format: Online ISBN-13/EAN: 9780030367892 ISBN-10: 0030367891 Product Code: 1109270 National/State: National Copyright Year: 2009