This volume offers information specialists an up-to-date introduction to using information resources. In addition to the theoretical foundations, approx.400 general and subject-specific information resources are selected, and their contents, functions and importance are described. The book conveys a basic knowledge of information resources which can be used directly in practice. Due to its broad scope of information and its consideration of the rapid transformation taking place in the field of information resources, the book puts a new focus on selecting and assessing the relevance of the means of information. Unique introduction to this subject in the German-speaking region Classic works on introduction to bibliography published in the mid-eighties have become obsolete In contrast to these classic works, the book offers a new focus on selecting and assessing the relevance of the means of information