Classification
330 - Economics
900 - History & geography
99
320 - Political science
30
300 - Social sciences
22
700 - The arts; fine & decorative arts
20
363 - Other social problems & services
17
333 - Economics of land & energy
14
000 - Computer science, information & general works
11
140 - Specific philosophical schools
11
380 - Commerce, communications & transportation
11
200 - Religion
10
301 - Sociology & anthropology
9
340 - Law
6
800 - Literature & rhetoric
6
400 - Language
5
610 - Medicine & health
5
370 - Education
4
410 - Linguistics
4
581 - Specific topics in natural history
4
720 - Architecture
4
100 - Philosophy & psychology
3
576 - Genetics & evolution
3
600 - Technology
3
297 - Islam, Babism & Bahai Faith
2
304 - Factors affecting social behavior
2
350 - Public administration & military science
2
540 - Chemistry & allied sciences
2
620 - Engineering & allied operations
2
657 - Accounting
2
658 - General management
2
780 - Music
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
170 - Ethics
1
336 - Public finance
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
630 - Agriculture & related technologies
1
791 - Public performances
1