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