Classification
000 - Computer science, information & general works
18
100 - Philosophy & psychology
3
140 - Specific philosophical schools
11
170 - Ethics
4
200 - Religion
1
300 - Social sciences
8
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
3
320 - Political science
330 - Economics
429
333 - Economics of land & energy
34
340 - Law
50
350 - Public administration & military science
1
361 - Social problems & social welfare in general
2
363 - Other social problems & services
25
370 - Education
12
380 - Commerce, communications & transportation
16
400 - Language
4
410 - Linguistics
5
500 - Natural sciences & mathematics
11
530 - Physics
1
540 - Chemistry & allied sciences
2
550 - Earth sciences
2
551 - Geology, hydrology & meteorology
9
576 - Genetics & evolution
12
580 - Plants (Botany)
1
581 - Specific topics in natural history
4
600 - Technology
27
610 - Medicine & health
13
620 - Engineering & allied operations
12
630 - Agriculture & related technologies
3
657 - Accounting
1
658 - General management
2
700 - The arts; fine & decorative arts
30
720 - Architecture
6
800 - Literature & rhetoric
2
900 - History & geography
40
920 - Biography, genealogy & insignia
1