Classification
380 - Commerce, communications & transportation
610 - Medicine & health
658 - General management
363 - Other social problems & services
4
000 - Computer science, information & general works
3
140 - Specific philosophical schools
3
330 - Economics
3
333 - Economics of land & energy
3
370 - Education
2
551 - Geology, hydrology & meteorology
2
580 - Plants (Botany)
2
600 - Technology
2
630 - Agriculture & related technologies
2
170 - Ethics
1
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1
900 - History & geography
1