Classification
000 - Computer science, information & general works
361 - Social problems & social welfare in general
333 - Economics of land & energy
5
600 - Technology
5
330 - Economics
4
610 - Medicine & health
4
620 - Engineering & allied operations
4
630 - Agriculture & related technologies
4
320 - Political science
3
363 - Other social problems & services
3
580 - Plants (Botany)
3
140 - Specific philosophical schools
2
380 - Commerce, communications & transportation
2
340 - Law
1
350 - Public administration & military science
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
612 - Human physiology
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1