Classification
200 - Religion
600 - Technology
630 - Agriculture & related technologies
3
900 - History & geography
3
140 - Specific philosophical schools
2
320 - Political science
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
330 - Economics
1
333 - Economics of land & energy
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
800 - Literature & rhetoric
1