Classification
370 - Education
400 - Language
252
410 - Linguistics
75
700 - The arts; fine & decorative arts
62
900 - History & geography
53
100 - Philosophy & psychology
39
380 - Commerce, communications & transportation
37
600 - Technology
37
320 - Political science
33
333 - Economics of land & energy
30
800 - Literature & rhetoric
29
000 - Computer science, information & general works
28
300 - Social sciences
24
140 - Specific philosophical schools
19
610 - Medicine & health
19
330 - Economics
18
363 - Other social problems & services
15
620 - Engineering & allied operations
15
500 - Natural sciences & mathematics
14
304 - Factors affecting social behavior
13
340 - Law
12
414 - Phonology & phonetics
11
301 - Sociology & anthropology
7
200 - Religion
6
551 - Geology, hydrology & meteorology
6
576 - Genetics & evolution
6
170 - Ethics
5
530 - Physics
5
658 - General management
5
720 - Architecture
5
780 - Music
5
580 - Plants (Botany)
3
120 - Epistemology, causation & humankind
2
297 - Islam, Babism & Bahai Faith
2
360 - Social problems & services; associations
2
361 - Social problems & social welfare in general
2
630 - Agriculture & related technologies
2
364 - Criminology
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1
657 - Accounting
1
770 - Photography, photographs & computer art
1