Classification
800 - Literature & rhetoric
900 - History & geography
700 - The arts; fine & decorative arts
211
410 - Linguistics
131
400 - Language
124
300 - Social sciences
104
100 - Philosophy & psychology
97
320 - Political science
93
140 - Specific philosophical schools
83
200 - Religion
74
600 - Technology
70
620 - Engineering & allied operations
54
333 - Economics of land & energy
45
000 - Computer science, information & general works
40
330 - Economics
36
340 - Law
35
363 - Other social problems & services
35
380 - Commerce, communications & transportation
35
301 - Sociology & anthropology
32
370 - Education
31
610 - Medicine & health
28
304 - Factors affecting social behavior
26
780 - Music
26
170 - Ethics
23
500 - Natural sciences & mathematics
22
576 - Genetics & evolution
21
720 - Architecture
21
297 - Islam, Babism & Bahai Faith
14
398 - Folklore
12
770 - Photography, photographs & computer art
10
580 - Plants (Botany)
9
530 - Physics
8
120 - Epistemology, causation & humankind
7
414 - Phonology & phonetics
7
581 - Specific topics in natural history
7
630 - Agriculture & related technologies
7
296 - Judaism
5
791 - Public performances
5
551 - Geology, hydrology & meteorology
4
658 - General management
4
540 - Chemistry & allied sciences
3
880 - Hellenic literatures; classical Greek
2
361 - Social problems & social welfare in general
1
364 - Criminology
1
520 - Astronomy & allied sciences
1
590 - Animals (Zoology)
1
657 - Accounting
1