Classification
380 - Commerce, communications & transportation
900 - History & geography
30
620 - Engineering & allied operations
12
700 - The arts; fine & decorative arts
11
300 - Social sciences
7
363 - Other social problems & services
7
600 - Technology
7
140 - Specific philosophical schools
6
200 - Religion
5
320 - Political science
5
301 - Sociology & anthropology
4
720 - Architecture
4
000 - Computer science, information & general works
3
330 - Economics
3
333 - Economics of land & energy
3
370 - Education
2
400 - Language
2
580 - Plants (Botany)
2
658 - General management
2
100 - Philosophy & psychology
1
297 - Islam, Babism & Bahai Faith
1
398 - Folklore
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
612 - Human physiology
1
791 - Public performances
1