The library's printed books are structured hierarchically using subject groups. There are 22 main groups, each with several sub-groups, which lead directly to the matching hits in the online catalogue.
- E-books and journals are not sorted by subject groups. The textbook collection is sorted by its own subject abbreviations, which are also used to find e-books. Media of the textbook collection can usually still be found via this directory, since usually 1 copy is available as monograph.
- The German terms shown below correspond to the shelf labeling.