Classification
000 - Computer science, information & general works
380 - Commerce, communications & transportation
600 - Technology
700 - The arts; fine & decorative arts
104
620 - Engineering & allied operations
95
333 - Economics of land & energy
86
900 - History & geography
73
363 - Other social problems & services
59
330 - Economics
55
140 - Specific philosophical schools
35
610 - Medicine & health
35
320 - Political science
34
370 - Education
27
576 - Genetics & evolution
25
720 - Architecture
21
580 - Plants (Botany)
19
630 - Agriculture & related technologies
19
500 - Natural sciences & mathematics
18
400 - Language
14
658 - General management
14
340 - Law
13
300 - Social sciences
12
551 - Geology, hydrology & meteorology
12
530 - Physics
11
800 - Literature & rhetoric
10
414 - Phonology & phonetics
8
410 - Linguistics
6
540 - Chemistry & allied sciences
6
100 - Philosophy & psychology
5
170 - Ethics
5
581 - Specific topics in natural history
5
780 - Music
5
200 - Religion
4
361 - Social problems & social welfare in general
4
612 - Human physiology
4
657 - Accounting
4
301 - Sociology & anthropology
3
304 - Factors affecting social behavior
3
520 - Astronomy & allied sciences
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
364 - Criminology
1
650 - Management & auxiliary services
1
770 - Photography, photographs & computer art
1
791 - Public performances
1