The German National Library (DNB; ) is the central archival library and national bibliographic centre for the Federal Republic of Germany. It is one of the largest libraries in the world. Its task is to collect, permanently archive, comprehensively document and record bibliographically all German and German-language publications since 1913, foreign publications about Germany, translations of German works, and the works of German-speaking emigrants published abroad between 1933 and 1945, and to make them available to the public. The DNB is also responsible for the and several special collections like the (German Exile Archive), and the (German Museum of Books and Writing). The German National Library maintains co-operative external relations on a national and international level. For example, it is the leading partner in developing and maintaining bibliographic rules and standards in Germany and plays a significant role in the development of international library standards. The cooperation with publishers has been regulated by law since 1935 for the and since 1969 for the . Duties are shared between the facilities in Leipzig and Frankfurt, with each center focusing its work in specific specialty areas. A third facility has been the (founded 1970), which deals with all music-related archiving (both printed and recorded materials). Since 2010 the Deutsches Musikarchiv is also located in Leipzig as an integral part of the facility there. History During the German revolutions of 1848, various booksellers and publishers offered their works to the Frankfurt Parliament for a parliamentary library. The library, led by Johann Heinrich Plath, was termed the ("Reich library"). After the failure of the revolution the library was abandoned and the stock of books already in existence was stored at the Germanisches Nationalmuseum in Nuremberg. In 1912, the town of Leipzig, seat of the annual Leipzig Book Fair, the Kingdom of Saxony, and the (Association of German booksellers) agreed to found a German National Library in Leipzig. Starting 1 January 1913, all publications in German were systematically collected (including books from Austria and Switzerland). In the same year, Gustav Wahl was elected as the first director. Under Nazi rule, from 1933 to 1945, German libraries were censored, becoming extensions of National Socialist rule. Books that Nazis seized in occupied countries entered German collections. In 1946, Georg Kurt Schauer, Heinrich Cobet, Vittorio Klostermann and Hanns Wilhelm Eppelsheimer, director of the Frankfurt University Library, initiated the re-establishment of a German archive library based in Frankfurt. The