Classification
000 - Computer science, information & general works
3
100 - Philosophy & psychology
9
140 - Specific philosophical schools
7
170 - Ethics
200 - Religion
1
300 - Social sciences
7
301 - Sociology & anthropology
1
320 - Political science
9
330 - Economics
4
333 - Economics of land & energy
4
340 - Law
4
361 - Social problems & social welfare in general
1
363 - Other social problems & services
8
380 - Commerce, communications & transportation
4
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
1
600 - Technology
9
610 - Medicine & health
6
620 - Engineering & allied operations
11
630 - Agriculture & related technologies
14
658 - General management
1
700 - The arts; fine & decorative arts
8
720 - Architecture
2
800 - Literature & rhetoric
3
900 - History & geography
3