Evaluating the Islamic book's back-of-the-book indexes in Islamic Azad University, Roudehen Branch according to the compliance with ISO 999 Standard

This research aims at evaluating the Islamic books’ back-of-the-book indexes in Islamic Azad University, Roudehen Branch according to the compliance with ISO 999 Standard. Descriptive survey was the research method used in this study and research population consists of all the Islamic books (BP Class in National Bibliography) available in the libraries of Islamic Azad University, Roudehen Branch. Research findings showed that among total 2650 books, 223 titles have had back-of-the-book index. It was found that Islamic books have had the most compliance (97.8%) with “pagination of back-of-the-book index”, one criterion of ISO 999 Standard. Least compliance (8.1%) was relating to presenting “the introductory note”. The overall compliance with ISO 999 Standard was 43.9%. In terms of back-of-the-book indexes, Islamic books are in a weak state. To improve this, importance of back-of-the-book indexes should be highlighted for authors, translators, and publishers.