Classification
630 - Agriculture & related technologies
600 - Technology
13
620 - Engineering & allied operations
11
700 - The arts; fine & decorative arts
10
000 - Computer science, information & general works
9
333 - Economics of land & energy
7
363 - Other social problems & services
7
380 - Commerce, communications & transportation
7
330 - Economics
6
551 - Geology, hydrology & meteorology
4
576 - Genetics & evolution
4
610 - Medicine & health
4
900 - History & geography
4
340 - Law
3
580 - Plants (Botany)
3
658 - General management
3
300 - Social sciences
2
320 - Political science
2
140 - Specific philosophical schools
1
170 - Ethics
1
350 - Public administration & military science
1
370 - Education
1
400 - Language
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
720 - Architecture
1