Classification
140 - Specific philosophical schools
157
610 - Medicine & health
83
700 - The arts; fine & decorative arts
66
333 - Economics of land & energy
41
330 - Economics
38
363 - Other social problems & services
31
320 - Political science
28
380 - Commerce, communications & transportation
28
370 - Education
25
600 - Technology
25
000 - Computer science, information & general works
19
301 - Sociology & anthropology
19
304 - Factors affecting social behavior
14
340 - Law
14
200 - Religion
10
580 - Plants (Botany)
10
900 - History & geography
10
300 - Social sciences
9
170 - Ethics
6
400 - Language
6
576 - Genetics & evolution
6
297 - Islam, Babism & Bahai Faith
5
361 - Social problems & social welfare in general
5
551 - Geology, hydrology & meteorology
5
581 - Specific topics in natural history
5
612 - Human physiology
5
100 - Philosophy & psychology
4
630 - Agriculture & related technologies
4
780 - Music
4
410 - Linguistics
3
658 - General management
3
720 - Architecture
3
414 - Phonology & phonetics
2
620 - Engineering & allied operations
2
800 - Literature & rhetoric
2
120 - Epistemology, causation & humankind
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
540 - Chemistry & allied sciences
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1
770 - Photography, photographs & computer art
1
920 - Biography, genealogy & insignia
1