Are ISSN mandatory, and what do they cost?
ISSN are not mandatory in the Federal Republic of Germany, but they are in other countries.
In Germany, ISSN are issued free of charge.
Navigation and service
Leipzig: Wednesday, 30.04.2025
The reading rooms in the main building of the German National Library in Leipzig will close at 14:00 due to an event. The museum reading room, the music reading room and the service area are open until 18.00. The exhibitions of the German Museum of Books and Writing will open from 10:00 to 18:00.
Frankfurt am Main: Repair work telephone system
On 2 May, the Frankfurt site of the German National Library will be unavailable by telephone from 9.30 - 11.30 due to repair work.
