Classification
330 - Economics
331 - Labor economics
669
658 - General management
523
338 - Production
358
000 - Computer science, information & general works
224
302 - Social interaction
222
700 - The arts; fine & decorative arts
189
333 - Economics of land & energy
185
381 - Commerce
168
600 - Technology
166
006 - Special computer methods
159
500 - Natural sciences & mathematics
150
620 - Engineering & allied operations
128
380 - Commerce, communications & transportation
115
363 - Other social problems & services
109
900 - History & geography
101
300 - Social sciences
91
005 - Computer programming, programs & data
90
320 - Political science
83
384 - Communications; telecommunication
76
004 - Data processing & computer science
72
650 - Management & auxiliary services
72
610 - Medicine & health
68
140 - Specific philosophical schools
63
670 - Manufacturing
56
370 - Education
42
551 - Geology, hydrology & meteorology
37
576 - Genetics & evolution
33
580 - Plants (Botany)
29
720 - Architecture
29
630 - Agriculture & related technologies
27
800 - Literature & rhetoric
26
745 - Decorative arts
25
158 - Applied psychology
23
659 - Advertising & public relations
22
340 - Law
17
364 - Criminology
17
400 - Language
15
153 - Mental processes & intelligence
14
304 - Factors affecting social behavior
14
581 - Specific topics in natural history
13
332 - Financial economics
12
374 - Adult education
12
303 - Social processes
9
510 - Mathematics
9
657 - Accounting
9
200 - Religion
8
530 - Physics
8
368 - Insurance
7
100 - Philosophy & psychology
6
more ...