Classification
200 - Religion
320 - Political science
380 - Commerce, communications & transportation
600 - Technology
700 - The arts; fine & decorative arts
900 - History & geography
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
330 - Economics
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1