Classification
330 - Economics
363 - Other social problems & services
700 - The arts; fine & decorative arts
333 - Economics of land & energy
145
000 - Computer science, information & general works
123
600 - Technology
102
320 - Political science
75
620 - Engineering & allied operations
63
610 - Medicine & health
59
140 - Specific philosophical schools
58
551 - Geology, hydrology & meteorology
58
900 - History & geography
58
380 - Commerce, communications & transportation
57
580 - Plants (Botany)
34
370 - Education
30
630 - Agriculture & related technologies
29
658 - General management
28
581 - Specific topics in natural history
22
340 - Law
15
500 - Natural sciences & mathematics
15
720 - Architecture
15
576 - Genetics & evolution
14
800 - Literature & rhetoric
13
304 - Factors affecting social behavior
10
400 - Language
9
300 - Social sciences
8
540 - Chemistry & allied sciences
8
100 - Philosophy & psychology
7
530 - Physics
6
200 - Religion
5
297 - Islam, Babism & Bahai Faith
5
301 - Sociology & anthropology
5
410 - Linguistics
5
414 - Phonology & phonetics
5
170 - Ethics
4
612 - Human physiology
4
657 - Accounting
4
520 - Astronomy & allied sciences
3
361 - Social problems & social welfare in general
2
550 - Earth sciences
2
615 - Pharmacology & therapeutics
2
791 - Public performances
2
160 - Logic
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
650 - Management & auxiliary services
1