Classification
000 - Computer science, information & general works
600 - Technology
39
380 - Commerce, communications & transportation
34
700 - The arts; fine & decorative arts
24
900 - History & geography
21
320 - Political science
15
400 - Language
15
410 - Linguistics
12
100 - Philosophy & psychology
10
140 - Specific philosophical schools
9
330 - Economics
9
620 - Engineering & allied operations
9
370 - Education
7
170 - Ethics
5
333 - Economics of land & energy
5
340 - Law
5
720 - Architecture
5
500 - Natural sciences & mathematics
4
800 - Literature & rhetoric
4
300 - Social sciences
2
301 - Sociology & anthropology
2
363 - Other social problems & services
2
610 - Medicine & health
2
658 - General management
2
780 - Music
2
120 - Epistemology, causation & humankind
1
200 - Religion
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
791 - Public performances
1