Classification
000 - Computer science, information & general works
81
100 - Philosophy & psychology
3
140 - Specific philosophical schools
21
170 - Ethics
3
300 - Social sciences
2
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
8
320 - Political science
3
330 - Economics
7
333 - Economics of land & energy
52
340 - Law
4
361 - Social problems & social welfare in general
1
363 - Other social problems & services
31
370 - Education
2
380 - Commerce, communications & transportation
17
400 - Language
4
414 - Phonology & phonetics
11
500 - Natural sciences & mathematics
13
539 - Modern physics
1
540 - Chemistry & allied sciences
10
551 - Geology, hydrology & meteorology
11
570 - Life sciences; biology
31
576 - Genetics & evolution
24
580 - Plants (Botany)
54
581 - Specific topics in natural history
20
600 - Technology
34
610 - Medicine & health
111
612 - Human physiology
10
615 - Pharmacology & therapeutics
6
616 - Diseases
2
617 - Surgery & related medical specialties
1
620 - Engineering & allied operations
29
630 - Agriculture & related technologies
23
658 - General management
4
700 - The arts; fine & decorative arts
63
720 - Architecture
8
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
7
900 - History & geography
20
920 - Biography, genealogy & insignia
1