Classification
501 - Philosophy & theory
21
109 - Historical & collected persons treatment
4
304 - Factors affecting social behavior
4
370 - Education
4
120 - Epistemology, causation & humankind
3
146 - Naturalism & related systems
3
190 - Modern western philosophy
3
330 - Economics
3
511 - General principles of mathematics
3
005 - Computer programming, programs & data
2
110 - Metaphysics
2
142 - Critical philosophy
2
160 - Logic
2
306 - Culture & institutions
2
509 - Historical, geographic & persons treatment
2
519 - Probabilities & applied mathematics
2
577 - Ecology
2
658 - General management
2
001 - Knowledge
1
006 - Special computer methods
1
070 - News media, journalism & publishing
1
100 - Philosophy & psychology
1
141 - Idealism & related systems
1
150 - Psychology
1
170 - Ethics
1
174 - Occupational ethics
1
301 - Sociology & anthropology
1
303 - Social processes
1
338 - Production
1
340 - Law
1
343 - Military, tax, trade & industrial law
1
351 - Public administration
1
530 - Physics
1
550 - Earth sciences
1
570 - Life sciences; biology
1
571 - Physiology & related subjects
1
601 - Philosophy & theory
1
610 - Medicine & health
1
613 - Personal health & safety
1
614 - Incidence & prevention of disease
1
616 - Diseases
1
617 - Surgery & related medical specialties
1
620 - Engineering & allied operations
1
634 - Orchards, fruits & forestry
1
650 - Management & auxiliary services
1
809 - History, description & criticism
1
941 - British Isles
1