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