Hermann Beck and his bibliographical instituts
Internationales Institut fuer Sozial-Bibliographie, founded in 1905
Internationales Institut fuer Techno-Bibliographie, founded in 1908
Similar aims as the Bridge: Combination of a subject-oriented central library, a bibliographic card index, an information agency, a bureau of translations and of clipping delivery as well as a bookseller
Cooperation with the Bridge ?
Criticism of the Bridge
Hapke