Classification
200 - Religion
900 - History & geography
700 - The arts; fine & decorative arts
3
320 - Political science
2
340 - Law
2
400 - Language
2
800 - Literature & rhetoric
2
140 - Specific philosophical schools
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
330 - Economics
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
600 - Technology
1
610 - Medicine & health
1
770 - Photography, photographs & computer art
1
780 - Music
1