Classification
400 - Language
320 - Political science
109
900 - History & geography
53
410 - Linguistics
35
700 - The arts; fine & decorative arts
35
100 - Philosophy & psychology
31
300 - Social sciences
25
370 - Education
20
330 - Economics
19
380 - Commerce, communications & transportation
15
800 - Literature & rhetoric
14
140 - Specific philosophical schools
12
000 - Computer science, information & general works
11
200 - Religion
11
170 - Ethics
9
297 - Islam, Babism & Bahai Faith
9
301 - Sociology & anthropology
9
333 - Economics of land & energy
9
340 - Law
9
780 - Music
9
600 - Technology
6
620 - Engineering & allied operations
6
304 - Factors affecting social behavior
4
363 - Other social problems & services
4
610 - Medicine & health
4
120 - Epistemology, causation & humankind
3
414 - Phonology & phonetics
3
581 - Specific topics in natural history
3
576 - Genetics & evolution
2
658 - General management
2
720 - Architecture
2
296 - Judaism
1
306 - Culture & institutions
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
491 - East Indo-European & Celtic languages
1
500 - Natural sciences & mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
590 - Animals (Zoology)
1
630 - Agriculture & related technologies
1
770 - Photography, photographs & computer art
1
791 - Public performances
1
808 - Rhetoric & collections of literature
1
835 - German speeches
1
837 - German humor & satire
1
891 - East Indo-European & Celtic literatures
1