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24 December 2025 to 1 January 2026

24 December 2025 to 1 January 2026: The German National Library will be closed at both locations. The exhibitions of the German Exile Archive 1933–1945 will also be closed. The exhibitions of the German Museum of Books and Writing will open from 10:00 to 18:00 on 27, 28 and 30 December.

ISSN in Online-Publications

For online publications, please specify the ISSN on the title or imprint page.

Recommendations by the US American National Information Standards Organization (NISO) on structuring the imprint of an online publication

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