Classification
140 - Specific philosophical schools
304 - Factors affecting social behavior
333 - Economics of land & energy
6
610 - Medicine & health
6
380 - Commerce, communications & transportation
5
700 - The arts; fine & decorative arts
5
363 - Other social problems & services
4
320 - Political science
3
000 - Computer science, information & general works
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
600 - Technology
2
200 - Religion
1
300 - Social sciences
1
330 - Economics
1
340 - Law
1
361 - Social problems & social welfare in general
1
370 - Education
1
414 - Phonology & phonetics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
620 - Engineering & allied operations
1
900 - History & geography
1