Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
320 - Political science
700 - The arts; fine & decorative arts
31
330 - Economics
26
363 - Other social problems & services
21
333 - Economics of land & energy
20
380 - Commerce, communications & transportation
17
600 - Technology
16
610 - Medicine & health
16
551 - Geology, hydrology & meteorology
15
581 - Specific topics in natural history
9
370 - Education
7
900 - History & geography
7
630 - Agriculture & related technologies
6
361 - Social problems & social welfare in general
5
620 - Engineering & allied operations
5
658 - General management
5
304 - Factors affecting social behavior
4
576 - Genetics & evolution
4
720 - Architecture
4
300 - Social sciences
3
301 - Sociology & anthropology
3
340 - Law
3
414 - Phonology & phonetics
3
580 - Plants (Botany)
3
100 - Philosophy & psychology
2
170 - Ethics
2
200 - Religion
2
297 - Islam, Babism & Bahai Faith
2
400 - Language
2
540 - Chemistry & allied sciences
2
657 - Accounting
2
120 - Epistemology, causation & humankind
1
360 - Social problems & services; associations
1
410 - Linguistics
1
550 - Earth sciences
1
650 - Management & auxiliary services
1
800 - Literature & rhetoric
1