Classification
000 - Computer science, information & general works
18
100 - Philosophy & psychology
1
140 - Specific philosophical schools
6
300 - Social sciences
3
304 - Factors affecting social behavior
1
320 - Political science
6
330 - Economics
12
333 - Economics of land & energy
16
340 - Law
3
363 - Other social problems & services
15
370 - Education
1
380 - Commerce, communications & transportation
10
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
7
520 - Astronomy & allied sciences
2
540 - Chemistry & allied sciences
3
551 - Geology, hydrology & meteorology
576 - Genetics & evolution
4
580 - Plants (Botany)
581 - Specific topics in natural history
10
600 - Technology
13
610 - Medicine & health
16
612 - Human physiology
4
620 - Engineering & allied operations
13
630 - Agriculture & related technologies
20
658 - General management
2
700 - The arts; fine & decorative arts
18
720 - Architecture
1
800 - Literature & rhetoric
3
900 - History & geography
4