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