Classification
000 - Computer science, information & general works
100 - Philosophy & psychology
700 - The arts; fine & decorative arts
12
333 - Economics of land & energy
11
330 - Economics
10
600 - Technology
9
363 - Other social problems & services
6
370 - Education
6
140 - Specific philosophical schools
5
610 - Medicine & health
5
620 - Engineering & allied operations
5
400 - Language
4
500 - Natural sciences & mathematics
4
576 - Genetics & evolution
4
900 - History & geography
4
380 - Commerce, communications & transportation
3
658 - General management
3
720 - Architecture
3
120 - Epistemology, causation & humankind
2
200 - Religion
2
320 - Political science
2
340 - Law
2
410 - Linguistics
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
780 - Music
2
800 - Literature & rhetoric
2
170 - Ethics
1
300 - Social sciences
1
301 - Sociology & anthropology
1
530 - Physics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
612 - Human physiology
1
630 - Agriculture & related technologies
1
770 - Photography, photographs & computer art
1