Classification
600 - Technology
19
333 - Economics of land & energy
16
700 - The arts; fine & decorative arts
15
620 - Engineering & allied operations
13
900 - History & geography
13
380 - Commerce, communications & transportation
6
000 - Computer science, information & general works
4
500 - Natural sciences & mathematics
3
530 - Physics
2
580 - Plants (Botany)
2
140 - Specific philosophical schools
1
330 - Economics
1
363 - Other social problems & services
1
576 - Genetics & evolution
1
650 - Management & auxiliary services
1
720 - Architecture
1