Classification
330 - Economics
658 - General management
187
333 - Economics of land & energy
148
381 - Commerce
119
700 - The arts; fine & decorative arts
116
600 - Technology
109
363 - Other social problems & services
101
000 - Computer science, information & general works
89
320 - Political science
71
380 - Commerce, communications & transportation
66
300 - Social sciences
65
620 - Engineering & allied operations
58
500 - Natural sciences & mathematics
50
302 - Social interaction
49
900 - History & geography
49
610 - Medicine & health
43
370 - Education
40
140 - Specific philosophical schools
36
650 - Management & auxiliary services
33
670 - Manufacturing
30
580 - Plants (Botany)
28
338 - Production
26
158 - Applied psychology
25
170 - Ethics
25
331 - Labor economics
25
551 - Geology, hydrology & meteorology
24
576 - Genetics & evolution
23
630 - Agriculture & related technologies
18
659 - Advertising & public relations
18
100 - Philosophy & psychology
16
720 - Architecture
15
400 - Language
14
340 - Law
13
800 - Literature & rhetoric
13
384 - Communications; telecommunication
12
153 - Mental processes & intelligence
11
581 - Specific topics in natural history
10
304 - Factors affecting social behavior
9
657 - Accounting
8
006 - Special computer methods
7
361 - Social problems & social welfare in general
7
350 - Public administration & military science
6
410 - Linguistics
6
530 - Physics
6
332 - Financial economics
5
745 - Decorative arts
5
200 - Religion
4
301 - Sociology & anthropology
4
414 - Phonology & phonetics
4
004 - Data processing & computer science
3
more ...