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