Classification
657 - Accounting
656
658 - General management
207
330 - Economics
179
332 - Financial economics
72
650 - Management & auxiliary services
54
336 - Public finance
34
320 - Political science
27
338 - Production
27
331 - Labor economics
20
300 - Social sciences
19
333 - Economics of land & energy
18
000 - Computer science, information & general works
17
363 - Other social problems & services
14
374 - Adult education
14
500 - Natural sciences & mathematics
13
900 - History & geography
13
340 - Law
11
600 - Technology
11
620 - Engineering & allied operations
11
700 - The arts; fine & decorative arts
11
005 - Computer programming, programs & data
9
346 - Private law
9
380 - Commerce, communications & transportation
8
781 - General principles & musical forms
8
004 - Data processing & computer science
7
302 - Social interaction
7
343 - Military, tax, trade & industrial law
7
140 - Specific philosophical schools
6
339 - Macroeconomics & related topics
6
368 - Insurance
6
610 - Medicine & health
6
670 - Manufacturing
6
174 - Occupational ethics
5
337 - International economics
4
370 - Education
4
624 - Civil engineering
4
792 - Stage presentations
4
352 - General considerations of public administration
3
551 - Geology, hydrology & meteorology
3
580 - Plants (Botany)
3
006 - Special computer methods
2
100 - Philosophy & psychology
2
170 - Ethics
2
361 - Social problems & social welfare in general
2
381 - Commerce
2
384 - Communications; telecommunication
2
519 - Probabilities & applied mathematics
2
628 - Sanitary & municipal engineering
2
630 - Agriculture & related technologies
2
651 - Office services
2
more ...