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SDNB
000 Generalities, Science050 General serials & their indexes220 Bible340 Law420 English490 Other languages520 Astronomy & allied sciences560 Paleontology Paleozoology620 Engineering & allied operations621.3 Electrical Engineering, Electronics660 Chemical engineering670 Manufacturing810 American literature in English830 Literatures of Germanic languages891.8 Slavic Literature930 History of the ancient world980 General history of South America