Classification
658 - General management
330 - Economics
297
331 - Labor economics
281
005 - Computer programming, programs & data
182
338 - Production
150
332 - Financial economics
142
500 - Natural sciences & mathematics
88
368 - Insurance
84
000 - Computer science, information & general works
74
300 - Social sciences
56
004 - Data processing & computer science
48
384 - Communications; telecommunication
45
302 - Social interaction
33
620 - Engineering & allied operations
33
374 - Adult education
32
670 - Manufacturing
31
381 - Commerce
28
364 - Criminology
27
363 - Other social problems & services
20
600 - Technology
18
333 - Economics of land & energy
13
610 - Medicine & health
12
700 - The arts; fine & decorative arts
10
153 - Mental processes & intelligence
9
006 - Special computer methods
8
362 - Social welfare problems & services
8
380 - Commerce, communications & transportation
8
580 - Plants (Botany)
8
630 - Agriculture & related technologies
7
745 - Decorative arts
7
900 - History & geography
6
339 - Macroeconomics & related topics
5
657 - Accounting
5
370 - Education
4
551 - Geology, hydrology & meteorology
4
576 - Genetics & evolution
4
140 - Specific philosophical schools
3
320 - Political science
3
340 - Law
3
519 - Probabilities & applied mathematics
3
530 - Physics
3
650 - Management & auxiliary services
3
025 - Library operations
2
158 - Applied psychology
2
305 - Social groups
2
343 - Military, tax, trade & industrial law
2
510 - Mathematics
2
629 - Other branches of engineering
2
800 - Literature & rhetoric
2
001 - Knowledge
1
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