Classification
100 - Philosophy & psychology
610 - Medicine & health
62
300 - Social sciences
53
900 - History & geography
53
370 - Education
52
320 - Political science
49
700 - The arts; fine & decorative arts
47
200 - Religion
43
333 - Economics of land & energy
36
170 - Ethics
28
363 - Other social problems & services
27
330 - Economics
24
301 - Sociology & anthropology
23
140 - Specific philosophical schools
19
600 - Technology
18
800 - Literature & rhetoric
18
340 - Law
16
000 - Computer science, information & general works
15
400 - Language
12
620 - Engineering & allied operations
11
297 - Islam, Babism & Bahai Faith
10
581 - Specific topics in natural history
10
576 - Genetics & evolution
9
380 - Commerce, communications & transportation
8
304 - Factors affecting social behavior
7
780 - Music
6
120 - Epistemology, causation & humankind
5
410 - Linguistics
5
500 - Natural sciences & mathematics
5
530 - Physics
5
361 - Social problems & social welfare in general
4
551 - Geology, hydrology & meteorology
3
580 - Plants (Botany)
3
612 - Human physiology
3
630 - Agriculture & related technologies
3
658 - General management
3
296 - Judaism
2
720 - Architecture
2
791 - Public performances
2
920 - Biography, genealogy & insignia
2
155 - Differential & developmental psychology
1
336 - Public finance
1
350 - Public administration & military science
1
362 - Social welfare problems & services
1
398 - Folklore
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
590 - Animals (Zoology)
1
615 - Pharmacology & therapeutics
1