Classification
400 - Language
14
410 - Linguistics
620 - Engineering & allied operations
600 - Technology
9
700 - The arts; fine & decorative arts
8
630 - Agriculture & related technologies
6
900 - History & geography
6
000 - Computer science, information & general works
4
100 - Philosophy & psychology
4
140 - Specific philosophical schools
3
300 - Social sciences
3
320 - Political science
3
380 - Commerce, communications & transportation
3
610 - Medicine & health
3
780 - Music
3
330 - Economics
2
370 - Education
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
200 - Religion
1
301 - Sociology & anthropology
1
340 - Law
1
363 - Other social problems & services
1
500 - Natural sciences & mathematics
1
530 - Physics
1
576 - Genetics & evolution
1
720 - Architecture
1