(10 Mar 2021) As of June 30, 2021, the National Union Catalog of Newspapers in Japan database will no longer be available via the National Diet Library Search. The data of the National Union Catalog of Newspapers in Japan as of March 31, 2021 will be made available as described below.
- What will be available
- Type of materials: microforms, reprints, etc.
- Bibliographic information: Name of the material, holding organization, holding period, and National Diet Library call number
- Data format: CSV
- Access method
The data can be accessed as described in the National Diet Library RESEARCH NAVI（https://rnavi.ndl.go.jp/rnavi/(in Japanese))
The announcement is here.