Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
330 - Economics
700 - The arts; fine & decorative arts
55
363 - Other social problems & services
48
333 - Economics of land & energy
47
600 - Technology
39
610 - Medicine & health
33
380 - Commerce, communications & transportation
31
320 - Political science
25
551 - Geology, hydrology & meteorology
23
620 - Engineering & allied operations
15
630 - Agriculture & related technologies
14
900 - History & geography
14
576 - Genetics & evolution
13
370 - Education
12
658 - General management
12
580 - Plants (Botany)
11
581 - Specific topics in natural history
9
340 - Law
7
500 - Natural sciences & mathematics
7
540 - Chemistry & allied sciences
7
720 - Architecture
7
800 - Literature & rhetoric
6
304 - Factors affecting social behavior
4
100 - Philosophy & psychology
3
361 - Social problems & social welfare in general
3
400 - Language
3
410 - Linguistics
3
414 - Phonology & phonetics
3
530 - Physics
3
657 - Accounting
3
770 - Photography, photographs & computer art
3
170 - Ethics
2
200 - Religion
2
297 - Islam, Babism & Bahai Faith
2
300 - Social sciences
2
301 - Sociology & anthropology
2
160 - Logic
1
550 - Earth sciences
1
612 - Human physiology
1
780 - Music
1