Classification
140 - Specific philosophical schools
380 - Commerce, communications & transportation
610 - Medicine & health
658 - General management
000 - Computer science, information & general works
5
330 - Economics
4
363 - Other social problems & services
4
370 - Education
4
600 - Technology
4
700 - The arts; fine & decorative arts
4
551 - Geology, hydrology & meteorology
3
333 - Economics of land & energy
2
576 - Genetics & evolution
2
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
2
170 - Ethics
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
580 - Plants (Botany)
1
900 - History & geography
1