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