Classification
330 - Economics
658 - General management
176
333 - Economics of land & energy
146
381 - Commerce
112
700 - The arts; fine & decorative arts
112
600 - Technology
108
363 - Other social problems & services
100
000 - Computer science, information & general works
87
320 - Political science
64
380 - Commerce, communications & transportation
62
300 - Social sciences
58
620 - Engineering & allied operations
57
500 - Natural sciences & mathematics
50
302 - Social interaction
47
900 - History & geography
46
610 - Medicine & health
43
370 - Education
38
140 - Specific philosophical schools
36
650 - Management & auxiliary services
30
670 - Manufacturing
30
580 - Plants (Botany)
28
170 - Ethics
24
331 - Labor economics
24
338 - Production
24
551 - Geology, hydrology & meteorology
24
576 - Genetics & evolution
23
158 - Applied psychology
22
630 - Agriculture & related technologies
18
659 - Advertising & public relations
18
100 - Philosophy & psychology
15
720 - Architecture
15
400 - Language
14
800 - Literature & rhetoric
13
340 - Law
12
384 - Communications; telecommunication
11
153 - Mental processes & intelligence
10
581 - Specific topics in natural history
10
304 - Factors affecting social behavior
8
657 - Accounting
8
006 - Special computer methods
7
350 - Public administration & military science
6
361 - Social problems & social welfare in general
6
410 - Linguistics
6
530 - Physics
6
332 - Financial economics
5
745 - Decorative arts
5
200 - Religion
4
414 - Phonology & phonetics
4
004 - Data processing & computer science
3
160 - Logic
3
more ...