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