Classification
100 - Philosophy & psychology
1
140 - Specific philosophical schools
3
300 - Social sciences
2
320 - Political science
333 - Economics of land & energy
1
340 - Law
3
363 - Other social problems & services
3
370 - Education
2
380 - Commerce, communications & transportation
400 - Language
1
500 - Natural sciences & mathematics
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
3
600 - Technology
610 - Medicine & health
1
620 - Engineering & allied operations
5
700 - The arts; fine & decorative arts
3
720 - Architecture
3
900 - History & geography