Classification
400 - Language
900 - History & geography
700 - The arts; fine & decorative arts
10
800 - Literature & rhetoric
10
000 - Computer science, information & general works
9
100 - Philosophy & psychology
9
320 - Political science
7
410 - Linguistics
7
370 - Education
6
333 - Economics of land & energy
5
140 - Specific philosophical schools
4
300 - Social sciences
4
380 - Commerce, communications & transportation
4
600 - Technology
4
610 - Medicine & health
4
301 - Sociology & anthropology
3
330 - Economics
3
363 - Other social problems & services
3
620 - Engineering & allied operations
3
120 - Epistemology, causation & humankind
2
200 - Religion
2
414 - Phonology & phonetics
2
780 - Music
2
170 - Ethics
1
340 - Law
1
360 - Social problems & services; associations
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
590 - Animals (Zoology)
1
658 - General management
1
720 - Architecture
1
770 - Photography, photographs & computer art
1
791 - Public performances
1