North American Product Classification System (NAPCS) Canada [Provisional Version 0.1]

• 512 - Internet, software and other computer related services
• 519011 - Internet publishing and broadcasting services

519011.21 - Textbooks, online

Books published in a digital file which can be accessed or downloaded over the Internet to be primarily used as educational material for students and teachers in formal study programs: at the elementary (including preschool) and high school levels; and at the postsecondary level, i.e., colleges and universities. These books generally contain knowledge summaries and/or practice questions with the text. Includes workbooks, teachers manuals and resource materials, reference books done specifically for the educational system, as well as interactive materials.