第二版取消并取代第一版（ISO 2789:1974）。旨在为国际图书馆界提供关于为国际报告目的保存图书馆统计数据的指导。ISO 2789是在教科文组织和ISO的密切合作下制定的。它的效果是，不同图书馆提供的统计数据将更直接地具有可比性。本文给出的定义仅用于统计目的。

This second edition cancels and replaces the first edition (ISO 2789:1974). Aims at giving guidance to the international library community on the keeping of library statistics for the purposes of international reporting. ISO 2789 was prepared in a close cooperation between UNESCO and ISO. It will have the effect that statistics produced by different libraries will be more directly comparable. The definitions presented are designed for statistical purposes only.