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Institute
SDNB
030 General encyclopedic works090 Manuscripts & rare books333.7 Natural resources, energy and environment370 Education380 Commerce, communications, transport491.8 Slavic languages500 Natural sciences560 Paleontology Paleozoology630 Agriculture690 Buildings720 Architecture800 Literature & rhetoric880 Hellenic literatures Classical Greek890 Literatures of other languages990 General history of other areas