Classification
140 - Specific philosophical schools
363 - Other social problems & services
380 - Commerce, communications & transportation
576 - Genetics & evolution
610 - Medicine & health
900 - History & geography
333 - Economics of land & energy
3
600 - Technology
3
170 - Ethics
2
300 - Social sciences
2
340 - Law
2
370 - Education
2
580 - Plants (Botany)
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
700 - The arts; fine & decorative arts
2
720 - Architecture
2
800 - Literature & rhetoric
2
400 - Language
1
410 - Linguistics
1
658 - General management
1