Classification
700 - The arts; fine & decorative arts
610 - Medicine & health
4
333 - Economics of land & energy
3
330 - Economics
2
363 - Other social problems & services
2
551 - Geology, hydrology & meteorology
2
580 - Plants (Botany)
2
630 - Agriculture & related technologies
2
900 - History & geography
2
140 - Specific philosophical schools
1
370 - Education
1
380 - Commerce, communications & transportation
1
658 - General management
1