Classification
600 - Technology
9
620 - Engineering & allied operations
9
900 - History & geography
9
700 - The arts; fine & decorative arts
6
140 - Specific philosophical schools
5
363 - Other social problems & services
4
320 - Political science
3
340 - Law
3
380 - Commerce, communications & transportation
3
500 - Natural sciences & mathematics
3
576 - Genetics & evolution
3
720 - Architecture
3
400 - Language
2
610 - Medicine & health
2
000 - Computer science, information & general works
1
580 - Plants (Botany)
1
615 - Pharmacology & therapeutics
1
630 - Agriculture & related technologies
1