Classification
100 - Philosophy & psychology
4
200 - Religion
301 - Sociology & anthropology
900 - History & geography
2
140 - Specific philosophical schools
1
170 - Ethics
1
300 - Social sciences
1
320 - Political science
1
340 - Law
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
398 - Folklore
1
400 - Language
1
551 - Geology, hydrology & meteorology
1