Classification
000 - Computer science, information & general works
370 - Education
12
700 - The arts; fine & decorative arts
12
720 - Architecture
600 - Technology
8
363 - Other social problems & services
7
333 - Economics of land & energy
6
900 - History & geography
6
380 - Commerce, communications & transportation
5
620 - Engineering & allied operations
5
330 - Economics
4
400 - Language
4
551 - Geology, hydrology & meteorology
4
140 - Specific philosophical schools
3
320 - Political science
3
610 - Medicine & health
3
576 - Genetics & evolution
2
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
340 - Law
1
540 - Chemistry & allied sciences
1