Classification
380 - Commerce, communications & transportation
576 - Genetics & evolution
658 - General management
700 - The arts; fine & decorative arts
333 - Economics of land & energy
5
000 - Computer science, information & general works
4
363 - Other social problems & services
4
600 - Technology
4
620 - Engineering & allied operations
4
330 - Economics
3
610 - Medicine & health
3
140 - Specific philosophical schools
2
500 - Natural sciences & mathematics
2
551 - Geology, hydrology & meteorology
2
900 - History & geography
2
320 - Political science
1
370 - Education
1
530 - Physics
1
580 - Plants (Botany)
1
720 - Architecture
1
800 - Literature & rhetoric
1