Classification
140 - Specific philosophical schools
600 - Technology
9
620 - Engineering & allied operations
9
900 - History & geography
700 - The arts; fine & decorative arts
8
363 - Other social problems & services
4
610 - Medicine & health
4
320 - Political science
3
333 - Economics of land & energy
3
340 - Law
3
380 - Commerce, communications & transportation
3
500 - Natural sciences & mathematics
3
576 - Genetics & evolution
3
580 - Plants (Botany)
3
720 - Architecture
3
000 - Computer science, information & general works
1
330 - Economics
1
414 - Phonology & phonetics
1