Classification
900 - History & geography
9
380 - Commerce, communications & transportation
4
140 - Specific philosophical schools
3
330 - Economics
3
700 - The arts; fine & decorative arts
3
200 - Religion
2
370 - Education
2
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
301 - Sociology & anthropology
1
340 - Law
1
363 - Other social problems & services
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
720 - Architecture
1
738 - Ceramic arts
1
800 - Literature & rhetoric
1
880 - Hellenic literatures; classical Greek
1
930 - History of ancient world to ca. 499
1