Classification
500 - Natural sciences & mathematics
700 - The arts; fine & decorative arts
8
610 - Medicine & health
7
612 - Human physiology
7
380 - Commerce, communications & transportation
5
140 - Specific philosophical schools
4
600 - Technology
4
620 - Engineering & allied operations
4
000 - Computer science, information & general works
3
320 - Political science
3
340 - Law
3
363 - Other social problems & services
3
576 - Genetics & evolution
3
720 - Architecture
3
900 - History & geography
3
333 - Economics of land & energy
2
370 - Education
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
615 - Pharmacology & therapeutics
1