Classification
600 - Technology
610 - Medicine & health
612 - Human physiology
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
333 - Economics of land & energy
3
380 - Commerce, communications & transportation
3
540 - Chemistry & allied sciences
3
900 - History & geography
3
000 - Computer science, information & general works
2
580 - Plants (Botany)
2
140 - Specific philosophical schools
1
363 - Other social problems & services
1
370 - Education
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
630 - Agriculture & related technologies
1