Classification
140 - Specific philosophical schools
330 - Economics
370 - Education
620 - Engineering & allied operations
8
600 - Technology
7
700 - The arts; fine & decorative arts
7
333 - Economics of land & energy
6
900 - History & geography
6
363 - Other social problems & services
5
300 - Social sciences
4
340 - Law
3
380 - Commerce, communications & transportation
3
610 - Medicine & health
3
100 - Philosophy & psychology
2
301 - Sociology & anthropology
2
320 - Political science
2
400 - Language
2
630 - Agriculture & related technologies
2
720 - Architecture
2
000 - Computer science, information & general works
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
658 - General management
1
800 - Literature & rhetoric
1