Classification
330 - Economics
23
333 - Economics of land & energy
18
700 - The arts; fine & decorative arts
17
000 - Computer science, information & general works
14
600 - Technology
13
658 - General management
13
363 - Other social problems & services
12
380 - Commerce, communications & transportation
10
610 - Medicine & health
7
140 - Specific philosophical schools
6
320 - Political science
5
620 - Engineering & allied operations
5
370 - Education
4
900 - History & geography
4
300 - Social sciences
3
551 - Geology, hydrology & meteorology
3
576 - Genetics & evolution
3
580 - Plants (Botany)
3
630 - Agriculture & related technologies
3
720 - Architecture
3
100 - Philosophy & psychology
2
297 - Islam, Babism & Bahai Faith
2
340 - Law
2
500 - Natural sciences & mathematics
2
520 - Astronomy & allied sciences
2
160 - Logic
1
200 - Religion
1
336 - Public finance
1
400 - Language
1
410 - Linguistics
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1
770 - Photography, photographs & computer art
1
780 - Music
1
800 - Literature & rhetoric
1