Here you will find regional and national catalogs, which might be of interest for your searches.
Union Catalogue of Serials
The Union Catalogue of Serials (ZDB) is a catalog for printed and electronic journals, newspapers, serials and other periodical works.
Local Catalog Stuttgart-Tübingen
In this catalog you will find the stock and information of scientific libraries in the Stuttgart-Tübingen region.
Stuttgart University Library
In this catalog you will find the stock of the Stuttgart University Library and of its associated institute libraries.
Württemberg State Library
The catalog of the Württemberg State Library (WLB) provides access to printed and electronic information resources. The library gains its particular significance from its right to collect legal deposit copies of every book published in Baden-Württemberg.
SWB online catalog
The union catalog of the Südwestdeutscher Bibliotheksverbund (SWB) offers you a central search entry for comprehensive research in the catalogs of the affiliated libraries in Baden-Württemberg, Saxony, Saarland and the Rhineland-Palatinate.
Central subject libraries
The central subject libraries serve as a national literature and information supplier for the highly specialized demands of science and research. They offer you comprehensive search possibilities, as it is their purpose to collect the publications of their subject as completely as possible and make them available through interlibrary loan. This includes publications within Germany and abroad as well as so-called grey literature (e.g. preprints).
The German National Library of Science and Technology (TIB) Hannover is the central subject library for technology as well as civil engineering, chemistry, computer science, mathematics and physics. (Catalog)
Karlsruhe Virtual catalog
The Karlsruhe Virtual Catalog (KVK) is a metacatalog that offers you the opportunity to search different catalogs and directories at the same time. These are for example the above mentioned union catalogs and the Union Catalog for Serials (ZDB) as well as numerous international catalogs.
The WorldCat is a catalog that provides access to inventory information from more than 10,000 libraries worldwide. A huge advantage of the catalog is that it supports Arabic, Bengali, Chinese, Cyrillic, Devanagaric, Greek, Hebrew, Japanese, Korean, Latin, Tamil and Thai characters.