Index
List of words at the end of a book that guides a reader to the specific pages on which subjects appear in the main body of the text.

Interior graphics
Pictures, diagrams, figures and other graphical items that appear within the contents of a book.

International Standard Book Number (ISBN)
Unique 13-digit number that identifies a version of a book.

Introduction
A section of the book that is written by the author of the work. Usually located in the front of a publication.

International Standard Serial Number (ISSN)
A worldwide numbering system for periodicals and other serially-produced products.