2023-1-25 Some materials will be unavailable while undergoing digitization

Part of our collection will be unavailable while undergoing digitization.

Unavailable materials and period

1. Some Japanese books held in Tokyo main Library: from March 1, 2023 to February 29, 2024
2. Some periodicals held in Tokyo main Library: from March 24, 2023 to September 29, 2023
3. Some doctoral dissertations held in Kansai-kan of the National Diet Library: from March 15, 2023 to September 29, 2023

These materials will be unavailable in sequence.

During this period, search results for these materials in the NDL Online will show the designation "Under revision."

For details, please refer to the "List of unavailable materials (Japanese)".

We apologize for any inconvenience caused by this operation.