Classification
300 - Social sciences
5
301 - Sociology & anthropology
340 - Law
380 - Commerce, communications & transportation
330 - Economics
4
200 - Religion
3
320 - Political science
3
370 - Education
3
363 - Other social problems & services
2
400 - Language
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
297 - Islam, Babism & Bahai Faith
1
333 - Economics of land & energy
1
410 - Linguistics
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
720 - Architecture
1
800 - Literature & rhetoric
1