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