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