The intent of this introduction is to provide the novice Bahá'í librarian with a basic knowledge of how to apply, in his/her own library, the classification for Bahá'í publications that is in use at the Bahá'í World Centre. Because most Bahá'ís who are placed in charge of a Bahá'í library are not trained in librarianship, and have no experience in classification, the introduction has been made as simple and clear as possible, while covering all aspects of classification that the Bahá'í librarian may face. It should be noted that classification is only one aspect of the cataloguing process. History of some General Library Classifications Development of the Bahá'í Classification based on the Library of Congress system Where to Begin Building complete classification numbers Cutter Numbers Works of Scripture and Interpretation Multiple Editions in a Single Year Classification and Cataloguing