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