Classification
333 - Economics of land & energy
3
363 - Other social problems & services
600 - Technology
3
610 - Medicine & health
620 - Engineering & allied operations
3
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
3
140 - Specific philosophical schools
2
170 - Ethics
2
300 - Social sciences
2
340 - Law
2
380 - Commerce, communications & transportation
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
720 - Architecture
2
800 - Literature & rhetoric
2
900 - History & geography
2
000 - Computer science, information & general works
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
612 - Human physiology
1