Classification
581 - Specific topics in natural history
700 - The arts; fine & decorative arts
10
363 - Other social problems & services
8
000 - Computer science, information & general works
7
333 - Economics of land & energy
7
140 - Specific philosophical schools
6
320 - Political science
6
330 - Economics
6
551 - Geology, hydrology & meteorology
6
900 - History & geography
6
580 - Plants (Botany)
4
380 - Commerce, communications & transportation
3
170 - Ethics
2
414 - Phonology & phonetics
2
576 - Genetics & evolution
2
600 - Technology
2
620 - Engineering & allied operations
2
100 - Philosophy & psychology
1
200 - Religion
1
340 - Law
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
658 - General management
1