Classification
140 - Specific philosophical schools
600 - Technology
658 - General management
330 - Economics
14
000 - Computer science, information & general works
13
700 - The arts; fine & decorative arts
11
333 - Economics of land & energy
9
363 - Other social problems & services
9
620 - Engineering & allied operations
9
610 - Medicine & health
8
380 - Commerce, communications & transportation
7
630 - Agriculture & related technologies
6
900 - History & geography
6
580 - Plants (Botany)
5
576 - Genetics & evolution
4
320 - Political science
3
361 - Social problems & social welfare in general
3
500 - Natural sciences & mathematics
3
410 - Linguistics
2
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
720 - Architecture
2
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
336 - Public finance
1
340 - Law
1
370 - Education
1
400 - Language
1
800 - Literature & rhetoric
1