Classification
363 - Other social problems & services
700 - The arts; fine & decorative arts
330 - Economics
7
333 - Economics of land & energy
7
600 - Technology
6
100 - Philosophy & psychology
5
320 - Political science
5
551 - Geology, hydrology & meteorology
5
620 - Engineering & allied operations
5
140 - Specific philosophical schools
4
581 - Specific topics in natural history
4
900 - History & geography
4
720 - Architecture
3
340 - Law
2
530 - Physics
2
170 - Ethics
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
590 - Animals (Zoology)
1
630 - Agriculture & related technologies
1