Classification
600 - Technology
700 - The arts; fine & decorative arts
24
000 - Computer science, information & general works
23
620 - Engineering & allied operations
15
610 - Medicine & health
14
900 - History & geography
12
330 - Economics
11
300 - Social sciences
10
333 - Economics of land & energy
10
363 - Other social problems & services
10
140 - Specific philosophical schools
8
630 - Agriculture & related technologies
8
380 - Commerce, communications & transportation
7
100 - Philosophy & psychology
5
320 - Political science
5
370 - Education
5
551 - Geology, hydrology & meteorology
4
780 - Music
4
170 - Ethics
3
410 - Linguistics
3
581 - Specific topics in natural history
3
340 - Law
2
500 - Natural sciences & mathematics
2
580 - Plants (Botany)
2
658 - General management
2
200 - Religion
1
400 - Language
1
414 - Phonology & phonetics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
612 - Human physiology
1
720 - Architecture
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1