Classification
600 - Technology
700 - The arts; fine & decorative arts
60
000 - Computer science, information & general works
56
333 - Economics of land & energy
41
620 - Engineering & allied operations
39
380 - Commerce, communications & transportation
30
330 - Economics
29
900 - History & geography
28
363 - Other social problems & services
22
610 - Medicine & health
22
320 - Political science
17
140 - Specific philosophical schools
15
720 - Architecture
13
370 - Education
12
658 - General management
11
300 - Social sciences
10
400 - Language
10
576 - Genetics & evolution
10
500 - Natural sciences & mathematics
8
551 - Geology, hydrology & meteorology
8
580 - Plants (Botany)
8
630 - Agriculture & related technologies
7
100 - Philosophy & psychology
6
340 - Law
5
170 - Ethics
4
304 - Factors affecting social behavior
3
530 - Physics
3
581 - Specific topics in natural history
3
200 - Religion
2
301 - Sociology & anthropology
2
410 - Linguistics
2
540 - Chemistry & allied sciences
2
800 - Literature & rhetoric
2
005 - Computer programming, programs & data
1
361 - Social problems & social welfare in general
1
550 - Earth sciences
1
615 - Pharmacology & therapeutics
1
657 - Accounting
1
770 - Photography, photographs & computer art
1
780 - Music
1