Classification
333 - Economics of land & energy
551 - Geology, hydrology & meteorology
600 - Technology
720 - Architecture
14
363 - Other social problems & services
10
000 - Computer science, information & general works
8
330 - Economics
7
620 - Engineering & allied operations
7
700 - The arts; fine & decorative arts
7
900 - History & geography
7
380 - Commerce, communications & transportation
6
610 - Medicine & health
6
320 - Political science
5
370 - Education
5
630 - Agriculture & related technologies
3
140 - Specific philosophical schools
2
580 - Plants (Botany)
2
170 - Ethics
1
360 - Social problems & services; associations
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1