Classification
330 - Economics
333 - Economics of land & energy
380 - Commerce, communications & transportation
610 - Medicine & health
140 - Specific philosophical schools
4
363 - Other social problems & services
3
340 - Law
2
551 - Geology, hydrology & meteorology
2
600 - Technology
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
658 - General management
2
000 - Computer science, information & general works
1
370 - Education
1
580 - Plants (Botany)
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1