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