Classification
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353 - Specific fields of public administration
3
358 - Air & other specialized forces
3
617 - Surgery & related medical specialties
3
629 - Other branches of engineering
3
001 - Knowledge
2
302 - Social interaction
2
344 - Labor, social, education & cultural law
2
355 - Military science
2
365 - Penal & related institutions
2
368 - Insurance
2
371 - Schools & their activities; special education
2
372 - Elementary education
2
410 - Linguistics
2
530 - Physics
2
539 - Modern physics
2
571 - Physiology & related subjects
2
657 - Accounting
2
780 - Music
2
956 - Middle East (Near East)
2
025 - Library operations
1
150 - Psychology
1
154 - Subconscious & altered states
1
261 - Social theology
1
327 - International relations
1
346 - Private law
1
379 - Public policy issues in education
1
394 - General customs
1
501 - Philosophy & theory
1
502 - Miscellany
1
509 - Historical, geographic & persons treatment
1
520 - Astronomy & allied sciences
1
542 - Techniques, equipment & materials
1
573 - Specific physiological systems in animals
1
574 - [Unassigned]
1
579 - Microorganisms, fungi & algae
1
590 - Animals (Zoology)
1
625 - Engineering of railroads & roads
1
631 - Techniques, equipment & materials
1
636 - Animal husbandry
1
641 - Food & drink
1
681 - Precision instruments & other devices
1
720 - Architecture
1
940 - History of Europe
1