Classification
340 - Law
1,201
650 - Management & auxiliary services
458
658 - General management
455
330 - Economics
351
616 - Diseases
301
620 - Engineering & allied operations
296
300 - Social sciences
241
610 - Medicine & health
236
621 - Applied physics
149
657 - Accounting
133
320 - Political science
116
332 - Financial economics
94
617 - Surgery & related medical specialties
69
629 - Other branches of engineering
65
343 - Military, tax, trade & industrial law
62
624 - Civil engineering
62
670 - Manufacturing
60
700 - The arts; fine & decorative arts
54
006 - Special computer methods
52
370 - Education
52
001 - Knowledge
51
004 - Data processing & computer science
48
615 - Pharmacology & therapeutics
46
618 - Gynecology, obstetrics, pediatrics & geriatrics
44
301 - Sociology & anthropology
43
344 - Labor, social, education & cultural law
42
338 - Production
41
336 - Public finance
40
690 - Buildings
40
333 - Economics of land & energy
38
306 - Culture & institutions
37
510 - Mathematics
37
005 - Computer programming, programs & data
36
570 - Life sciences; biology
35
900 - History & geography
35
540 - Chemistry & allied sciences
30
302 - Social interaction
28
346 - Private law
28
345 - Criminal law
27
519 - Probabilities & applied mathematics
26
304 - Factors affecting social behavior
25
305 - Social groups
22
363 - Other social problems & services
22
003 - Systems
21
158 - Applied psychology
20
530 - Physics
19
551 - Geology, hydrology & meteorology
17
361 - Social problems & social welfare in general
15
579 - Microorganisms, fungi & algae
15
628 - Sanitary & municipal engineering
15
more ...