Classification
330 - Economics
320 - Political science
193
380 - Commerce, communications & transportation
193
363 - Other social problems & services
102
333 - Economics of land & energy
100
600 - Technology
65
700 - The arts; fine & decorative arts
65
000 - Computer science, information & general works
57
900 - History & geography
56
620 - Engineering & allied operations
43
340 - Law
38
610 - Medicine & health
33
658 - General management
30
500 - Natural sciences & mathematics
24
551 - Geology, hydrology & meteorology
24
140 - Specific philosophical schools
23
370 - Education
15
576 - Genetics & evolution
14
580 - Plants (Botany)
12
300 - Social sciences
10
304 - Factors affecting social behavior
10
388 - Transportation; ground transportation
10
630 - Agriculture & related technologies
10
800 - Literature & rhetoric
9
720 - Architecture
8
530 - Physics
7
384 - Communications; telecommunication
6
004 - Data processing & computer science
5
414 - Phonology & phonetics
5
336 - Public finance
4
410 - Linguistics
4
581 - Specific topics in natural history
4
657 - Accounting
4
361 - Social problems & social welfare in general
3
808 - Rhetoric & collections of literature
3
170 - Ethics
2
200 - Religion
2
302 - Social interaction
2
331 - Labor economics
2
381 - Commerce
2
387 - Water, air & space transportation
2
400 - Language
2
540 - Chemistry & allied sciences
2
650 - Management & auxiliary services
2
670 - Manufacturing
2
011 - Bibliographies
1
158 - Applied psychology
1
160 - Logic
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
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