• periodicals and serials
• fiction in Slovenian
• fiction of Slovenian authors translated to other languages
• slovenica up to 1960 (Slovenian author, Slovenian language, Slovenian publisher)
• materials published prior to 1945
• materials from reading rooms of special collections
• doctoral theses, master theses, research studies
• books of reference (encyclopaedias, lexicons, dictionaries, bibliographies etc.)
• materials with rich pictorial material
• tourist guides
• reports from congresses and symposia
• rare and precious materials
• larger formats (III and IV)

The above materials can only be used in NUK reading rooms. A maximum of six items at a time can be taken outside the library on loan. All the above restrictions do not apply to book numbers beginning with the letter U.