Classification
prev ...
800 - Literature & rhetoric
9
543 - Analytical chemistry
8
547 - Organic chemistry
8
617 - Surgery & related medical specialties
8
535 - Light & infrared & ultraviolet phenomena
7
320 - Political science
6
514 - Topology
6
526 - Mathematical geography
6
612 - Human physiology
6
304 - Factors affecting social behavior
5
533 - Gas mechanics
5
546 - Inorganic chemistry
5
630 - Agriculture & related technologies
5
534 - Sound & related vibrations
4
537 - Electricity & electronics
4
573 - Specific physiological systems in animals
4
581 - Specific topics in natural history
4
615 - Pharmacology & therapeutics
4
658 - General management
4
511 - General principles of mathematics
3
623 - Military & nautical engineering
3
664 - Food technology
3
667 - Cleaning, color & coating technologies
3
338 - Production
2
400 - Language
2
501 - Philosophy & theory
2
516 - Geometry
2
542 - Techniques, equipment & materials
2
548 - Crystallography
2
549 - Mineralogy
2
590 - Animals (Zoology)
2
618 - Gynecology, obstetrics, pediatrics & geriatrics
2
641 - Food & drink
2
662 - Explosives, fuels & related products
2
665 - Industrial oils, fats, waxes & gases
2
668 - Technology of other organic products
2
690 - Buildings
2
720 - Architecture
2
770 - Photography, photographs & computer art
2
040 - [Unassigned]
1
050 - General serial publications
1
303 - Social processes
1
307 - Communities
1
331 - Labor economics
1
361 - Social problems & social welfare in general
1
538 - Magnetism
1
578 - Natural history of organisms
1
591 - Specific topics in natural history
1
631 - Techniques, equipment & materials
1
634 - Orchards, fruits & forestry
1
more ...