Classification
600 - Technology
610 - Medicine & health
363 - Other social problems & services
4
700 - The arts; fine & decorative arts
4
140 - Specific philosophical schools
3
333 - Economics of land & energy
3
380 - Commerce, communications & transportation
3
580 - Plants (Botany)
3
304 - Factors affecting social behavior
2
370 - Education
2
500 - Natural sciences & mathematics
2
576 - Genetics & evolution
2
000 - Computer science, information & general works
1
320 - Political science
1
340 - Law
1
630 - Agriculture & related technologies
1