Classification
600 - Technology
610 - Medicine & health
330 - Economics
12
000 - Computer science, information & general works
9
363 - Other social problems & services
5
140 - Specific philosophical schools
4
170 - Ethics
3
620 - Engineering & allied operations
3
700 - The arts; fine & decorative arts
3
340 - Law
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
612 - Human physiology
2
900 - History & geography
2
001 - Knowledge
1
338 - Production
1
361 - Social problems & social welfare in general
1
362 - Social welfare problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
615 - Pharmacology & therapeutics
1
660 - Chemical engineering
1