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SDNB
004 Data processing Computer sciences030 General encyclopedic works480 Hellenic languages Classical Greek510 Mathematics540 Chemistry & allied sciences620 Engineering & allied operations621.3 Electrical Engineering, Electronics624 Structural and Environmental Engineering720 Architecture791 Public performances793 Indoor games & amusements830 Literatures of Germanic languages914.3 Geography & travel Germany980 General history of South America990 General history of other areas