Classification
333 - Economics of land & energy
700 - The arts; fine & decorative arts
330 - Economics
106
363 - Other social problems & services
88
600 - Technology
83
320 - Political science
78
000 - Computer science, information & general works
63
900 - History & geography
56
620 - Engineering & allied operations
47
380 - Commerce, communications & transportation
43
610 - Medicine & health
43
551 - Geology, hydrology & meteorology
40
370 - Education
39
140 - Specific philosophical schools
30
630 - Agriculture & related technologies
23
720 - Architecture
19
340 - Law
18
581 - Specific topics in natural history
18
576 - Genetics & evolution
15
300 - Social sciences
14
658 - General management
14
100 - Philosophy & psychology
13
580 - Plants (Botany)
10
304 - Factors affecting social behavior
9
500 - Natural sciences & mathematics
9
800 - Literature & rhetoric
9
200 - Religion
8
400 - Language
6
410 - Linguistics
6
530 - Physics
6
170 - Ethics
5
297 - Islam, Babism & Bahai Faith
4
657 - Accounting
4
301 - Sociology & anthropology
3
540 - Chemistry & allied sciences
3
780 - Music
3
350 - Public administration & military science
2
414 - Phonology & phonetics
2
520 - Astronomy & allied sciences
2
160 - Logic
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
550 - Earth sciences
1
615 - Pharmacology & therapeutics
1
650 - Management & auxiliary services
1