Classification
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011 - Bibliographies
6
550 - Earth sciences
6
577 - Ecology
6
580 - Plants (Botany)
6
741 - Drawing & drawings
6
153 - Mental processes & intelligence
5
304 - Factors affecting social behavior
5
780 - Music
5
808 - Rhetoric & collections of literature
5
305 - Social groups
4
511 - General principles of mathematics
4
630 - Agriculture & related technologies
4
770 - Photography, photographs & computer art
4
820 - English & Old English literatures
4
959 - Southeast Asia
4
140 - Specific philosophical schools
3
303 - Social processes
3
364 - Criminology
3
370 - Education
3
512 - Algebra
3
515 - Analysis
3
571 - Physiology & related subjects
3
660 - Chemical engineering
3
720 - Architecture
3
046 - [Unassigned]
2
490 - Other languages
2
516 - Geometry
2
523 - Specific celestial bodies & phenomena
2
526 - Mathematical geography
2
590 - Animals (Zoology)
2
610 - Medicine & health
2
612 - Human physiology
2
613 - Personal health & safety
2
617 - Surgery & related medical specialties
2
624 - Civil engineering
2
651 - Office services
2
778 - Fields & kinds of photography
2
790 - Recreational & performing arts
2
793 - Indoor games & amusements
2
800 - Literature & rhetoric
2
007 - [Unassigned]
1
051 - Serials in American English
1
100 - Philosophy & psychology
1
149 - Other philosophical systems
1
152 - Perception, movement, emotions & drives
1
155 - Differential & developmental psychology
1
158 - Applied psychology
1
170 - Ethics
1
294 - Religions of Indic origin
1
321 - Systems of governments & states
1
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