Part of the Digital Library items is open to the public, these books can be downloaded by any Internet user and read from the screen. To reach their full-text version as pdf-files a reader should have Internet access and Acrobat Reader installed. The level of access to an item is shown on the page of search results.

Green — open access
Red — restricted access

If the access to the item is restricted this means that the work is copyright. Copyright works are only available at one of our reading rooms.