Classification
700 - The arts; fine & decorative arts
800 - Literature & rhetoric
900 - History & geography
600 - Technology
34
620 - Engineering & allied operations
29
333 - Economics of land & energy
27
100 - Philosophy & psychology
24
330 - Economics
19
140 - Specific philosophical schools
17
200 - Religion
13
363 - Other social problems & services
13
400 - Language
13
410 - Linguistics
13
720 - Architecture
13
320 - Political science
12
780 - Music
12
380 - Commerce, communications & transportation
11
576 - Genetics & evolution
11
000 - Computer science, information & general works
10
300 - Social sciences
10
610 - Medicine & health
10
340 - Law
8
580 - Plants (Botany)
8
370 - Education
7
170 - Ethics
6
791 - Public performances
6
301 - Sociology & anthropology
5
770 - Photography, photographs & computer art
5
398 - Folklore
4
304 - Factors affecting social behavior
3
500 - Natural sciences & mathematics
3
530 - Physics
3
551 - Geology, hydrology & meteorology
3
658 - General management
3
120 - Epistemology, causation & humankind
2
581 - Specific topics in natural history
2
630 - Agriculture & related technologies
2
361 - Social problems & social welfare in general
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
590 - Animals (Zoology)
1
880 - Hellenic literatures; classical Greek
1