Classification
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
71
333 - Economics of land & energy
65
600 - Technology
64
000 - Computer science, information & general works
54
330 - Economics
54
620 - Engineering & allied operations
43
610 - Medicine & health
34
900 - History & geography
34
363 - Other social problems & services
28
320 - Political science
23
576 - Genetics & evolution
22
140 - Specific philosophical schools
20
580 - Plants (Botany)
18
630 - Agriculture & related technologies
15
500 - Natural sciences & mathematics
12
551 - Geology, hydrology & meteorology
12
340 - Law
11
384 - Communications; telecommunication
11
370 - Education
10
658 - General management
10
300 - Social sciences
8
100 - Philosophy & psychology
7
304 - Factors affecting social behavior
7
530 - Physics
7
540 - Chemistry & allied sciences
7
581 - Specific topics in natural history
7
612 - Human physiology
7
414 - Phonology & phonetics
6
170 - Ethics
4
200 - Religion
4
301 - Sociology & anthropology
4
336 - Public finance
3
400 - Language
3
410 - Linguistics
3
650 - Management & auxiliary services
3
720 - Architecture
3
791 - Public performances
3
800 - Literature & rhetoric
3
150 - Psychology
2
153 - Mental processes & intelligence
2
158 - Applied psychology
2
302 - Social interaction
2
331 - Labor economics
2
338 - Production
2
361 - Social problems & social welfare in general
2
615 - Pharmacology & therapeutics
2
651 - Office services
2
005 - Computer programming, programs & data
1
297 - Islam, Babism & Bahai Faith
1
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