Classification
330 - Economics
76
610 - Medicine & health
58
000 - Computer science, information & general works
39
700 - The arts; fine & decorative arts
34
580 - Plants (Botany)
30
333 - Economics of land & energy
25
363 - Other social problems & services
22
551 - Geology, hydrology & meteorology
20
600 - Technology
20
620 - Engineering & allied operations
18
630 - Agriculture & related technologies
18
140 - Specific philosophical schools
13
380 - Commerce, communications & transportation
13
414 - Phonology & phonetics
13
612 - Human physiology
12
370 - Education
8
576 - Genetics & evolution
7
581 - Specific topics in natural history
7
900 - History & geography
7
540 - Chemistry & allied sciences
6
100 - Philosophy & psychology
5
304 - Factors affecting social behavior
5
320 - Political science
5
500 - Natural sciences & mathematics
5
300 - Social sciences
4
400 - Language
4
339 - Macroeconomics & related topics
3
658 - General management
3
800 - Literature & rhetoric
3
336 - Public finance
2
340 - Law
2
570 - Life sciences; biology
2
615 - Pharmacology & therapeutics
2
616 - Diseases
2
720 - Architecture
2
158 - Applied psychology
1
170 - Ethics
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
362 - Social welfare problems & services
1
530 - Physics
1
618 - Gynecology, obstetrics, pediatrics & geriatrics
1
650 - Management & auxiliary services
1