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For Librarians

The National Diet Library provides international services including Photoduplication Service, International Loan Service and Reference Service through other libraries or via the Internet.

Please note that, information about making and providing bibliographic data, library research and training for librarians etc. are provided mainly for assisting libraries in Japan.

For personal users, please see the User Guide.

News for library

This page introduces the NDL news for library.


These pages introduce international services of the NDL including remote user services and services through other libraries.

National Diet Library Handbook for Library Support

This page introduces procedures for using our services to domestic libraries and provides them as a handbook in PDF format.

Introduction of Reference Books

This page introduces the bibliographies and contents of reference books acquired by the NDL. (in RESEARCH NAVI)

NDL National Union Catalog Network

This page introduces the union catalog of Japanese books held in NDL, prefectural libraries and major municipal libraries in Japan.

Collaborative Reference Database Project

This page gives an outline of the database project which integrates the record of reference services in Japanese libraries and the search guide.

Library Research

This site provides information on libraries and library and information science in and outside of Japan (Most issues are in Japanese; a few are in English.)

Training Programs for Librarians

This page introduces training programs mainly for librarians in Japan.

Preservation activity

This page introduces the NDL's activities as the Asia Regional Centre for the IFLA Core Activity on PAC (Preservation and Conservation), one of the six core activities developed by the International Federation of Library Associations and Institutions.


This page provides the NDL's information about making and providing various types of bibliographic data.

International Standard identifier for libraries and related organizations (ISIL)

An introduction to ISIL and ISIL Japan Agency.

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