Classification
363 - Other social problems & services
330 - Economics
11
333 - Economics of land & energy
10
700 - The arts; fine & decorative arts
10
000 - Computer science, information & general works
8
600 - Technology
8
140 - Specific philosophical schools
5
320 - Political science
5
380 - Commerce, communications & transportation
5
620 - Engineering & allied operations
5
900 - History & geography
5
551 - Geology, hydrology & meteorology
4
610 - Medicine & health
4
410 - Linguistics
3
500 - Natural sciences & mathematics
3
576 - Genetics & evolution
3
370 - Education
2
581 - Specific topics in natural history
2
658 - General management
2
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
340 - Law
1
361 - Social problems & social welfare in general
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
720 - Architecture
1
800 - Literature & rhetoric
1