Classification
200 - Religion
2
330 - Economics
600 - Technology
610 - Medicine & health
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
170 - Ethics
1
300 - Social sciences
1
301 - Sociology & anthropology
1
320 - Political science
1
333 - Economics of land & energy
1
340 - Law
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
581 - Specific topics in natural history
1