Classification
400 - Language
900 - History & geography
800 - Literature & rhetoric
25
100 - Philosophy & psychology
20
410 - Linguistics
20
700 - The arts; fine & decorative arts
20
320 - Political science
16
000 - Computer science, information & general works
10
370 - Education
9
200 - Religion
8
300 - Social sciences
8
333 - Economics of land & energy
8
140 - Specific philosophical schools
7
380 - Commerce, communications & transportation
7
301 - Sociology & anthropology
6
330 - Economics
6
610 - Medicine & health
6
780 - Music
6
120 - Epistemology, causation & humankind
5
363 - Other social problems & services
4
600 - Technology
4
414 - Phonology & phonetics
3
620 - Engineering & allied operations
3
170 - Ethics
2
340 - Law
2
500 - Natural sciences & mathematics
2
770 - Photography, photographs & computer art
2
791 - Public performances
2
296 - Judaism
1
304 - Factors affecting social behavior
1
360 - Social problems & services; associations
1
430 - Germanic languages; German
1
491 - East Indo-European & Celtic languages
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
590 - Animals (Zoology)
1
658 - General management
1
720 - Architecture
1
808 - Rhetoric & collections of literature
1