Classification
000 - Computer science, information & general works
2
100 - Philosophy & psychology
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
2
170 - Ethics
1
200 - Religion
1
300 - Social sciences
8
320 - Political science
9
330 - Economics
333 - Economics of land & energy
6
340 - Law
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
4
370 - Education
6
380 - Commerce, communications & transportation
4
400 - Language
3
410 - Linguistics
2
500 - Natural sciences & mathematics
1
530 - Physics
2
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
2
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
600 - Technology
610 - Medicine & health
6
620 - Engineering & allied operations
9
630 - Agriculture & related technologies
3
658 - General management
3
700 - The arts; fine & decorative arts
720 - Architecture
3
770 - Photography, photographs & computer art
2
780 - Music
4
791 - Public performances
1
800 - Literature & rhetoric
1
900 - History & geography
11