Classification
000 - Computer science, information & general works
658 - General management
330 - Economics
492
331 - Labor economics
341
338 - Production
261
302 - Social interaction
161
381 - Commerce
147
500 - Natural sciences & mathematics
130
620 - Engineering & allied operations
125
300 - Social sciences
115
384 - Communications; telecommunication
100
380 - Commerce, communications & transportation
91
670 - Manufacturing
89
745 - Decorative arts
80
700 - The arts; fine & decorative arts
71
650 - Management & auxiliary services
70
600 - Technology
68
153 - Mental processes & intelligence
66
333 - Economics of land & energy
50
363 - Other social problems & services
46
610 - Medicine & health
42
332 - Financial economics
37
374 - Adult education
31
140 - Specific philosophical schools
26
576 - Genetics & evolution
20
158 - Applied psychology
19
320 - Political science
19
900 - History & geography
19
580 - Plants (Botany)
18
368 - Insurance
15
551 - Geology, hydrology & meteorology
14
630 - Agriculture & related technologies
14
001 - Knowledge
13
370 - Education
13
006 - Special computer methods
11
530 - Physics
11
340 - Law
9
808 - Rhetoric & collections of literature
8
720 - Architecture
7
011 - Bibliographies
6
100 - Philosophy & psychology
5
361 - Social problems & social welfare in general
5
400 - Language
5
581 - Specific topics in natural history
5
150 - Psychology
4
170 - Ethics
4
519 - Probabilities & applied mathematics
4
659 - Advertising & public relations
4
800 - Literature & rhetoric
4
510 - Mathematics
3
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