Classification
501 - Philosophy & theory
7
150 - Psychology
3
380 - Commerce, communications & transportation
3
500 - Natural sciences & mathematics
3
610 - Medicine & health
3
000 - Computer science, information & general works
2
140 - Specific philosophical schools
2
300 - Social sciences
2
301 - Sociology & anthropology
2
302 - Social interaction
2
330 - Economics
2
363 - Other social problems & services
2
530 - Physics
2
616 - Diseases
2
658 - General management
2
001 - Knowledge
1
003 - Systems
1
100 - Philosophy & psychology
1
152 - Perception, movement, emotions & drives
1
155 - Differential & developmental psychology
1
160 - Logic
1
306 - Culture & institutions
1
327 - International relations
1
332 - Financial economics
1
368 - Insurance
1
507 - Education, research & related topics
1
519 - Probabilities & applied mathematics
1
540 - Chemistry & allied sciences
1
600 - Technology
1
612 - Human physiology
1
670 - Manufacturing
1
700 - The arts; fine & decorative arts
1
741 - Drawing & drawings
1
900 - History & geography
1