Classification
000 - Computer science, information & general works
610 - Medicine & health
600 - Technology
9
370 - Education
4
380 - Commerce, communications & transportation
4
700 - The arts; fine & decorative arts
4
363 - Other social problems & services
3
170 - Ethics
2
320 - Political science
2
616 - Diseases
2
800 - Literature & rhetoric
2
001 - Knowledge
1
140 - Specific philosophical schools
1
333 - Economics of land & energy
1
340 - Law
1
362 - Social welfare problems & services
1
658 - General management
1