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SDNB
004 Data processing Computer sciences070 News media, journalismn, publishing080 General collections439 Other Germanic languages520 Astronomy & allied sciences540 Chemistry & allied sciences560 Paleontology Paleozoology621.3 Electrical Engineering, Electronics793 Indoor games & amusements830 Literatures of Germanic languages900 History943 General history of Europe Central Europe Germany990 General history of other areas