Classification
000 - Computer science, information & general works
1
170 - Ethics
1
320 - Political science
330 - Economics
4
333 - Economics of land & energy
3
360 - Social problems & services; associations
1
363 - Other social problems & services
370 - Education
2
380 - Commerce, communications & transportation
2
551 - Geology, hydrology & meteorology
576 - Genetics & evolution
1
580 - Plants (Botany)
1
600 - Technology
610 - Medicine & health
3
620 - Engineering & allied operations
4
700 - The arts; fine & decorative arts
720 - Architecture
2
900 - History & geography