Classification
000 - Computer science, information & general works
330 - Economics
900 - History & geography
600 - Technology
34
620 - Engineering & allied operations
31
700 - The arts; fine & decorative arts
27
333 - Economics of land & energy
22
380 - Commerce, communications & transportation
20
363 - Other social problems & services
14
320 - Political science
13
370 - Education
8
658 - General management
8
720 - Architecture
8
140 - Specific philosophical schools
7
610 - Medicine & health
7
400 - Language
6
630 - Agriculture & related technologies
6
300 - Social sciences
5
576 - Genetics & evolution
5
800 - Literature & rhetoric
5
580 - Plants (Botany)
4
410 - Linguistics
3
500 - Natural sciences & mathematics
3
551 - Geology, hydrology & meteorology
3
581 - Specific topics in natural history
3
780 - Music
3
100 - Philosophy & psychology
2
301 - Sociology & anthropology
2
340 - Law
2
414 - Phonology & phonetics
2
530 - Physics
2
770 - Photography, photographs & computer art
2
170 - Ethics
1
304 - Factors affecting social behavior
1
540 - Chemistry & allied sciences
1