Classification
000 - Computer science, information & general works
5
001 - Knowledge
1
100 - Philosophy & psychology
12
140 - Specific philosophical schools
21
170 - Ethics
174 - Occupational ethics
3
200 - Religion
4
300 - Social sciences
2
320 - Political science
2
330 - Economics
13
340 - Law
19
344 - Labor, social, education & cultural law
1
346 - Private law
1
361 - Social problems & social welfare in general
9
362 - Social welfare problems & services
1
363 - Other social problems & services
4
370 - Education
3
380 - Commerce, communications & transportation
3
580 - Plants (Botany)
9
581 - Specific topics in natural history
1
600 - Technology
12
610 - Medicine & health
54
612 - Human physiology
1
616 - Diseases
2
620 - Engineering & allied operations
4
658 - General management
8
660 - Chemical engineering
1
700 - The arts; fine & decorative arts
6
800 - Literature & rhetoric
1
900 - History & geography
2