Classification
000 - Computer science, information & general works
57
100 - Philosophy & psychology
2
140 - Specific philosophical schools
22
170 - Ethics
4
300 - Social sciences
8
304 - Factors affecting social behavior
3
320 - Political science
36
330 - Economics
47
333 - Economics of land & energy
80
340 - Law
7
350 - Public administration & military science
2
360 - Social problems & services; associations
2
361 - Social problems & social welfare in general
1
363 - Other social problems & services
159
370 - Education
10
380 - Commerce, communications & transportation
35
400 - Language
4
410 - Linguistics
1
414 - Phonology & phonetics
14
500 - Natural sciences & mathematics
17
530 - Physics
5
540 - Chemistry & allied sciences
10
550 - Earth sciences
4
551 - Geology, hydrology & meteorology
576 - Genetics & evolution
11
580 - Plants (Botany)
37
581 - Specific topics in natural history
18
590 - Animals (Zoology)
2
600 - Technology
147
610 - Medicine & health
27
612 - Human physiology
4
620 - Engineering & allied operations
166
630 - Agriculture & related technologies
48
658 - General management
5
700 - The arts; fine & decorative arts
79
720 - Architecture
9
800 - Literature & rhetoric
5
900 - History & geography
80