One of the most important tasks of librarians always has been to provide access to information resources. This role will not change in the electronic environment. Users need not worry about the question from where a publication can be obtained; they can rely on a system of libraries to obtain needed information for them. In the print as well as in the electronic environment, librarians assist users in searching and retrieving information. They mediate between authors/readers, publishers, digital archives and other parties involved, provide appropriate tools capable of matching user needs with the available information, and deliver current as well as historic publications to the users.