Classification
100 - Philosophy & psychology
320 - Political science
29
330 - Economics
9
900 - History & geography
6
340 - Law
5
140 - Specific philosophical schools
2
193 - Philosophy of Germany & Austria
2
200 - Religion
2
300 - Social sciences
2
576 - Genetics & evolution
2
700 - The arts; fine & decorative arts
2
170 - Ethics
1
301 - Sociology & anthropology
1
303 - Social processes
1
800 - Literature & rhetoric
1
818 - American miscellaneous writings
1
819 - (Optional number)
1