Classification
170 - Ethics
380 - Commerce, communications & transportation
140 - Specific philosophical schools
13
320 - Political science
12
000 - Computer science, information & general works
10
100 - Philosophy & psychology
10
330 - Economics
10
610 - Medicine & health
10
370 - Education
9
700 - The arts; fine & decorative arts
9
340 - Law
8
600 - Technology
7
363 - Other social problems & services
6
333 - Economics of land & energy
5
620 - Engineering & allied operations
5
900 - History & geography
5
300 - Social sciences
4
551 - Geology, hydrology & meteorology
4
200 - Religion
3
400 - Language
3
576 - Genetics & evolution
3
580 - Plants (Botany)
3
630 - Agriculture & related technologies
3
658 - General management
3
410 - Linguistics
2
720 - Architecture
2
800 - Literature & rhetoric
2
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
414 - Phonology & phonetics
1
581 - Specific topics in natural history
1
920 - Biography, genealogy & insignia
1