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