Classification
658 - General management
330 - Economics
948
338 - Production
376
300 - Social sciences
354
302 - Social interaction
299
331 - Labor economics
252
500 - Natural sciences & mathematics
238
381 - Commerce
228
670 - Manufacturing
216
650 - Management & auxiliary services
152
332 - Financial economics
127
000 - Computer science, information & general works
125
384 - Communications; telecommunication
96
620 - Engineering & allied operations
83
158 - Applied psychology
82
005 - Computer programming, programs & data
77
153 - Mental processes & intelligence
63
368 - Insurance
48
380 - Commerce, communications & transportation
46
001 - Knowledge
42
004 - Data processing & computer science
41
303 - Social processes
38
333 - Economics of land & energy
36
363 - Other social problems & services
35
600 - Technology
35
006 - Special computer methods
32
700 - The arts; fine & decorative arts
31
304 - Factors affecting social behavior
27
610 - Medicine & health
27
745 - Decorative arts
25
170 - Ethics
17
659 - Advertising & public relations
17
011 - Bibliographies
15
900 - History & geography
14
374 - Adult education
13
576 - Genetics & evolution
13
320 - Political science
12
580 - Plants (Botany)
11
370 - Education
10
140 - Specific philosophical schools
9
630 - Agriculture & related technologies
9
657 - Accounting
9
336 - Public finance
8
800 - Literature & rhetoric
8
551 - Geology, hydrology & meteorology
7
621 - Applied physics
6
174 - Occupational ethics
5
305 - Social groups
5
791 - Public performances
5
003 - Systems
4
more ...