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Institute
SDNB
000 Generalities, Science030 General encyclopedic works333.7 Natural resources, energy and environment335 Military science550 Earth sciences560 Paleontology Paleozoology600 Technology (Applied sciences)630 Agriculture690 Buildings700 The arts793 Indoor games & amusements880 Hellenic literatures Classical Greek910 Geography & travel943 General history of Europe Central Europe Germany950 General history of Asia Far East