Classification
140 - Specific philosophical schools
551 - Geology, hydrology & meteorology
610 - Medicine & health
620 - Engineering & allied operations
000 - Computer science, information & general works
5
333 - Economics of land & energy
5
363 - Other social problems & services
5
380 - Commerce, communications & transportation
5
576 - Genetics & evolution
4
700 - The arts; fine & decorative arts
4
300 - Social sciences
3
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
3
540 - Chemistry & allied sciences
3
580 - Plants (Botany)
3
581 - Specific topics in natural history
3
612 - Human physiology
3
600 - Technology
2
658 - General management
2
330 - Economics
1
370 - Education
1
630 - Agriculture & related technologies
1