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SDNB
004 Data processing Computer sciences050 General serials & their indexes070 News media, journalismn, publishing150 Psychology400 Language, Linguistics439 Other Germanic languages450 Italian, Romanian, Rhaeto-Romanic500 Natural sciences520 Astronomy & allied sciences560 Paleontology Paleozoology621.3 Electrical Engineering, Electronics624 Structural and Environmental Engineering660 Chemical engineering700 The arts793 Indoor games & amusements950 General history of Asia Far East990 General history of other areasK Children's and youth literature