Classification
620 - Engineering & allied operations
600 - Technology
338
900 - History & geography
297
700 - The arts; fine & decorative arts
226
333 - Economics of land & energy
209
000 - Computer science, information & general works
103
363 - Other social problems & services
103
330 - Economics
96
380 - Commerce, communications & transportation
62
580 - Plants (Botany)
55
610 - Medicine & health
43
576 - Genetics & evolution
40
500 - Natural sciences & mathematics
37
658 - General management
37
720 - Architecture
35
140 - Specific philosophical schools
31
414 - Phonology & phonetics
26
630 - Agriculture & related technologies
23
540 - Chemistry & allied sciences
21
370 - Education
20
320 - Political science
17
331 - Labor economics
17
551 - Geology, hydrology & meteorology
17
340 - Law
14
800 - Literature & rhetoric
13
384 - Communications; telecommunication
12
530 - Physics
12
300 - Social sciences
8
400 - Language
7
304 - Factors affecting social behavior
6
621 - Applied physics
6
004 - Data processing & computer science
5
338 - Production
5
657 - Accounting
5
770 - Photography, photographs & computer art
5
005 - Computer programming, programs & data
4
302 - Social interaction
4
670 - Manufacturing
4
361 - Social problems & social welfare in general
3
410 - Linguistics
3
745 - Decorative arts
3
780 - Music
3
791 - Public performances
3
100 - Philosophy & psychology
2
170 - Ethics
2
297 - Islam, Babism & Bahai Faith
2
581 - Specific topics in natural history
2
612 - Human physiology
2
777 - [Unassigned]
2
001 - Knowledge
1
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