Classification
320 - Political science
330 - Economics
700 - The arts; fine & decorative arts
900 - History & geography
333 - Economics of land & energy
28
600 - Technology
28
300 - Social sciences
24
363 - Other social problems & services
23
000 - Computer science, information & general works
20
576 - Genetics & evolution
18
620 - Engineering & allied operations
18
370 - Education
17
340 - Law
15
380 - Commerce, communications & transportation
15
140 - Specific philosophical schools
11
630 - Agriculture & related technologies
11
610 - Medicine & health
9
100 - Philosophy & psychology
8
400 - Language
8
551 - Geology, hydrology & meteorology
8
780 - Music
8
720 - Architecture
7
800 - Literature & rhetoric
7
301 - Sociology & anthropology
6
410 - Linguistics
6
658 - General management
6
200 - Religion
5
304 - Factors affecting social behavior
5
580 - Plants (Botany)
5
581 - Specific topics in natural history
5
170 - Ethics
4
770 - Photography, photographs & computer art
4
791 - Public performances
3
160 - Logic
2
360 - Social problems & services; associations
2
414 - Phonology & phonetics
2
500 - Natural sciences & mathematics
2
530 - Physics
2
120 - Epistemology, causation & humankind
1
297 - Islam, Babism & Bahai Faith
1
382 - International commerce
1
550 - Earth sciences
1
657 - Accounting
1