Classification
333 - Economics of land & energy
400 - Language
600 - Technology
700 - The arts; fine & decorative arts
330 - Economics
11
000 - Computer science, information & general works
10
620 - Engineering & allied operations
8
363 - Other social problems & services
6
380 - Commerce, communications & transportation
6
900 - History & geography
6
140 - Specific philosophical schools
5
580 - Plants (Botany)
4
610 - Medicine & health
4
370 - Education
3
500 - Natural sciences & mathematics
3
576 - Genetics & evolution
3
304 - Factors affecting social behavior
2
320 - Political science
2
410 - Linguistics
2
540 - Chemistry & allied sciences
2
720 - Architecture
2
800 - Literature & rhetoric
2
160 - Logic
1
300 - Social sciences
1
340 - Law
1
414 - Phonology & phonetics
1
630 - Agriculture & related technologies
1
658 - General management
1