Classification
000 - Computer science, information & general works
16
100 - Philosophy & psychology
1
140 - Specific philosophical schools
21
170 - Ethics
1
200 - Religion
1
304 - Factors affecting social behavior
320 - Political science
2
330 - Economics
1
333 - Economics of land & energy
16
361 - Social problems & social welfare in general
1
363 - Other social problems & services
16
380 - Commerce, communications & transportation
9
400 - Language
1
410 - Linguistics
1
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
9
576 - Genetics & evolution
7
580 - Plants (Botany)
12
581 - Specific topics in natural history
2
600 - Technology
7
610 - Medicine & health
29
615 - Pharmacology & therapeutics
4
620 - Engineering & allied operations
8
630 - Agriculture & related technologies
2
700 - The arts; fine & decorative arts
25
770 - Photography, photographs & computer art
1
780 - Music
1
800 - Literature & rhetoric
3
900 - History & geography
3