With the online catalogue you can browse through the collection of the libraries of Cologne, Brühl, Neuss, Mainz, Aachen and Rostock. There is an interlibrary loan service between the libraries in Cologne, Brühl and Neuss.
through the catalogue, you will receive the information if media is available
or borrowed. With your own library account, you can pre-order media directly
from the catalogue online and