Classification
363 - Other social problems & services
700 - The arts; fine & decorative arts
45
320 - Political science
37
333 - Economics of land & energy
37
330 - Economics
35
600 - Technology
31
620 - Engineering & allied operations
30
300 - Social sciences
26
140 - Specific philosophical schools
25
551 - Geology, hydrology & meteorology
23
900 - History & geography
22
610 - Medicine & health
19
630 - Agriculture & related technologies
19
301 - Sociology & anthropology
17
581 - Specific topics in natural history
17
000 - Computer science, information & general works
16
100 - Philosophy & psychology
15
340 - Law
14
200 - Religion
11
720 - Architecture
10
370 - Education
9
380 - Commerce, communications & transportation
9
170 - Ethics
7
540 - Chemistry & allied sciences
7
580 - Plants (Botany)
7
800 - Literature & rhetoric
7
304 - Factors affecting social behavior
6
500 - Natural sciences & mathematics
6
530 - Physics
5
400 - Language
3
120 - Epistemology, causation & humankind
2
550 - Earth sciences
2
576 - Genetics & evolution
2
628 - Sanitary & municipal engineering
2
658 - General management
2
780 - Music
2
791 - Public performances
2
160 - Logic
1
297 - Islam, Babism & Bahai Faith
1
327 - International relations
1
410 - Linguistics
1
414 - Phonology & phonetics
1
590 - Animals (Zoology)
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1