Classification
333 - Economics of land & energy
330 - Economics
65
320 - Political science
52
363 - Other social problems & services
48
700 - The arts; fine & decorative arts
46
000 - Computer science, information & general works
30
600 - Technology
30
140 - Specific philosophical schools
25
551 - Geology, hydrology & meteorology
25
900 - History & geography
25
370 - Education
21
610 - Medicine & health
21
340 - Law
20
581 - Specific topics in natural history
17
620 - Engineering & allied operations
17
380 - Commerce, communications & transportation
16
580 - Plants (Botany)
14
630 - Agriculture & related technologies
11
300 - Social sciences
9
304 - Factors affecting social behavior
8
200 - Religion
7
576 - Genetics & evolution
6
720 - Architecture
6
800 - Literature & rhetoric
5
100 - Philosophy & psychology
4
170 - Ethics
4
297 - Islam, Babism & Bahai Faith
4
500 - Natural sciences & mathematics
4
400 - Language
3
658 - General management
3
657 - Accounting
2
770 - Photography, photographs & computer art
2
296 - Judaism
1
301 - Sociology & anthropology
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
410 - Linguistics
1
414 - Phonology & phonetics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
550 - Earth sciences
1
780 - Music
1
791 - Public performances
1