Classification
330 - Economics
658 - General management
175
333 - Economics of land & energy
139
381 - Commerce
115
700 - The arts; fine & decorative arts
112
600 - Technology
106
363 - Other social problems & services
96
000 - Computer science, information & general works
87
320 - Political science
68
380 - Commerce, communications & transportation
65
300 - Social sciences
63
620 - Engineering & allied operations
55
302 - Social interaction
48
900 - History & geography
48
500 - Natural sciences & mathematics
46
610 - Medicine & health
43
370 - Education
39
140 - Specific philosophical schools
38
650 - Management & auxiliary services
31
670 - Manufacturing
29
580 - Plants (Botany)
26
158 - Applied psychology
23
331 - Labor economics
23
551 - Geology, hydrology & meteorology
23
170 - Ethics
22
338 - Production
22
576 - Genetics & evolution
22
630 - Agriculture & related technologies
18
659 - Advertising & public relations
18
100 - Philosophy & psychology
14
720 - Architecture
14
340 - Law
13
400 - Language
13
800 - Literature & rhetoric
12
384 - Communications; telecommunication
11
153 - Mental processes & intelligence
10
581 - Specific topics in natural history
10
304 - Factors affecting social behavior
8
006 - Special computer methods
7
361 - Social problems & social welfare in general
7
657 - Accounting
7
530 - Physics
6
791 - Public performances
6
350 - Public administration & military science
5
410 - Linguistics
5
745 - Decorative arts
5
200 - Religion
4
301 - Sociology & anthropology
4
332 - Financial economics
4
414 - Phonology & phonetics
4
more ...