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