Classification
000 - Computer science, information & general works
2
100 - Philosophy & psychology
140 - Specific philosophical schools
170 - Ethics
7
200 - Religion
2
300 - Social sciences
8
301 - Sociology & anthropology
3
304 - Factors affecting social behavior
2
320 - Political science
330 - Economics
333 - Economics of land & energy
6
340 - Law
3
361 - Social problems & social welfare in general
1
363 - Other social problems & services
3
370 - Education
2
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
2
581 - Specific topics in natural history
1
600 - Technology
2
610 - Medicine & health
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
3
800 - Literature & rhetoric
1
900 - History & geography
5