Classification
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341 - Law of nations
1
344 - Labor, social, education & cultural law
1
345 - Criminal law
1
353 - Specific fields of public administration
1
361 - Social problems & social welfare in general
1
418 - Standard usage & applied linguistics
1
530 - Physics
1
531 - Classical mechanics; solid mechanics
1
534 - Sound & related vibrations
1
541 - Physical chemistry
1
543 - Analytical chemistry
1
546 - Inorganic chemistry
1
579 - Microorganisms, fungi & algae
1
581 - Specific topics in natural history
1
628 - Sanitary & municipal engineering
1
629 - Other branches of engineering
1
650 - Management & auxiliary services
1
658 - General management
1
900 - History & geography
1