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SDNB
000 Generalities, Science030 General encyclopedic works050 General serials & their indexes320 Political science510 Mathematics520 Astronomy & allied sciences530 Physics560 Paleontology Paleozoology621.3 Electrical Engineering, Electronics660 Chemical engineering700 The arts720 Architecture750 Painting & paintings760 Graphic arts Printmaking & prints800 Literature & rhetoric960 General history of Africa980 General history of South America990 General history of other areasS School books