Classification
410 - Linguistics
400 - Language
910
900 - History & geography
518
700 - The arts; fine & decorative arts
321
800 - Literature & rhetoric
317
414 - Phonology & phonetics
141
340 - Law
105
100 - Philosophy & psychology
100
380 - Commerce, communications & transportation
98
000 - Computer science, information & general works
94
140 - Specific philosophical schools
92
370 - Education
74
320 - Political science
62
200 - Religion
60
600 - Technology
53
300 - Social sciences
48
333 - Economics of land & energy
40
491 - East Indo-European & Celtic languages
36
301 - Sociology & anthropology
35
330 - Economics
34
500 - Natural sciences & mathematics
30
610 - Medicine & health
28
620 - Engineering & allied operations
25
149 - Other philosophical systems
23
576 - Genetics & evolution
22
363 - Other social problems & services
20
170 - Ethics
19
780 - Music
18
398 - Folklore
15
304 - Factors affecting social behavior
12
530 - Physics
9
160 - Logic
8
658 - General management
7
630 - Agriculture & related technologies
6
720 - Architecture
6
791 - Public performances
6
297 - Islam, Babism & Bahai Faith
5
581 - Specific topics in natural history
5
296 - Judaism
4
551 - Geology, hydrology & meteorology
4
580 - Plants (Botany)
4
770 - Photography, photographs & computer art
4
120 - Epistemology, causation & humankind
3
430 - Germanic languages; German
3
437 - German language variations
3
540 - Chemistry & allied sciences
3
808 - Rhetoric & collections of literature
3
435 - German grammar
2
880 - Hellenic literatures; classical Greek
2
891 - East Indo-European & Celtic literatures
2
more ...