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