Classification
000 - Computer science, information & general works
600 - Technology
44
900 - History & geography
35
700 - The arts; fine & decorative arts
34
300 - Social sciences
32
320 - Political science
32
380 - Commerce, communications & transportation
21
100 - Philosophy & psychology
19
333 - Economics of land & energy
18
330 - Economics
17
363 - Other social problems & services
16
620 - Engineering & allied operations
15
200 - Religion
14
400 - Language
14
140 - Specific philosophical schools
13
301 - Sociology & anthropology
10
410 - Linguistics
10
800 - Literature & rhetoric
9
370 - Education
8
610 - Medicine & health
8
340 - Law
7
500 - Natural sciences & mathematics
7
630 - Agriculture & related technologies
6
170 - Ethics
4
297 - Islam, Babism & Bahai Faith
4
530 - Physics
4
304 - Factors affecting social behavior
3
540 - Chemistry & allied sciences
3
576 - Genetics & evolution
3
581 - Specific topics in natural history
3
658 - General management
3
720 - Architecture
3
120 - Epistemology, causation & humankind
2
780 - Music
2
160 - Logic
1
331 - Labor economics
1
338 - Production
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
374 - Adult education
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
770 - Photography, photographs & computer art
1
791 - Public performances
1