Classification
302 - Social interaction
338 - Production
658 - General management
611
300 - Social sciences
539
330 - Economics
500
670 - Manufacturing
281
500 - Natural sciences & mathematics
279
331 - Labor economics
145
650 - Management & auxiliary services
76
381 - Commerce
73
158 - Applied psychology
53
384 - Communications; telecommunication
52
153 - Mental processes & intelligence
49
006 - Special computer methods
42
332 - Financial economics
37
000 - Computer science, information & general works
30
380 - Commerce, communications & transportation
15
620 - Engineering & allied operations
15
303 - Social processes
14
001 - Knowledge
12
745 - Decorative arts
11
150 - Psychology
7
005 - Computer programming, programs & data
6
659 - Advertising & public relations
6
368 - Insurance
5
004 - Data processing & computer science
4
155 - Differential & developmental psychology
3
170 - Ethics
3
362 - Social welfare problems & services
3
070 - News media, journalism & publishing
2
304 - Factors affecting social behavior
2
364 - Criminology
2
510 - Mathematics
2
600 - Technology
2
011 - Bibliographies
1
025 - Library operations
1
174 - Occupational ethics
1
346 - Private law
1
351 - Public administration
1
352 - General considerations of public administration
1
374 - Adult education
1
382 - International commerce
1
519 - Probabilities & applied mathematics
1
621 - Applied physics
1
629 - Other branches of engineering
1
808 - Rhetoric & collections of literature
1