Classification
320 - Political science
330 - Economics
333 - Economics of land & energy
363 - Other social problems & services
600 - Technology
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
11
620 - Engineering & allied operations
11
380 - Commerce, communications & transportation
9
551 - Geology, hydrology & meteorology
8
900 - History & geography
8
610 - Medicine & health
7
370 - Education
6
140 - Specific philosophical schools
5
658 - General management
4
720 - Architecture
4
576 - Genetics & evolution
3
580 - Plants (Botany)
3
297 - Islam, Babism & Bahai Faith
2
581 - Specific topics in natural history
2
657 - Accounting
2
100 - Philosophy & psychology
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
361 - Social problems & social welfare in general
1
400 - Language
1
410 - Linguistics
1
414 - Phonology & phonetics
1
520 - Astronomy & allied sciences
1
630 - Agriculture & related technologies
1
650 - Management & auxiliary services
1
800 - Literature & rhetoric
1