Classification
370 - Education
600 - Technology
133
000 - Computer science, information & general works
61
700 - The arts; fine & decorative arts
56
900 - History & geography
35
620 - Engineering & allied operations
32
140 - Specific philosophical schools
31
333 - Economics of land & energy
30
100 - Philosophy & psychology
26
380 - Commerce, communications & transportation
23
363 - Other social problems & services
22
330 - Economics
21
400 - Language
21
610 - Medicine & health
21
300 - Social sciences
17
500 - Natural sciences & mathematics
12
530 - Physics
12
320 - Political science
10
720 - Architecture
9
780 - Music
9
410 - Linguistics
8
576 - Genetics & evolution
8
800 - Literature & rhetoric
7
551 - Geology, hydrology & meteorology
6
170 - Ethics
5
581 - Specific topics in natural history
5
540 - Chemistry & allied sciences
4
630 - Agriculture & related technologies
4
658 - General management
4
770 - Photography, photographs & computer art
4
304 - Factors affecting social behavior
3
340 - Law
3
371 - Schools & their activities; special education
3
580 - Plants (Botany)
3
200 - Religion
2
301 - Sociology & anthropology
2
360 - Social problems & services; associations
2
361 - Social problems & social welfare in general
2
519 - Probabilities & applied mathematics
2
120 - Epistemology, causation & humankind
1
153 - Mental processes & intelligence
1
297 - Islam, Babism & Bahai Faith
1
414 - Phonology & phonetics
1
612 - Human physiology
1
745 - Decorative arts
1