Classification
300 - Social sciences
338 - Production
658 - General management
808
330 - Economics
613
302 - Social interaction
517
500 - Natural sciences & mathematics
292
670 - Manufacturing
291
331 - Labor economics
185
650 - Management & auxiliary services
102
158 - Applied psychology
76
153 - Mental processes & intelligence
65
384 - Communications; telecommunication
61
381 - Commerce
58
332 - Financial economics
40
620 - Engineering & allied operations
29
000 - Computer science, information & general works
24
001 - Knowledge
22
380 - Commerce, communications & transportation
22
745 - Decorative arts
13
368 - Insurance
9
004 - Data processing & computer science
7
006 - Special computer methods
7
150 - Psychology
7
303 - Social processes
7
362 - Social welfare problems & services
7
005 - Computer programming, programs & data
6
170 - Ethics
6
304 - Factors affecting social behavior
5
352 - General considerations of public administration
5
011 - Bibliographies
3
510 - Mathematics
3
659 - Advertising & public relations
3
800 - Literature & rhetoric
3
155 - Differential & developmental psychology
2
364 - Criminology
2
600 - Technology
2
610 - Medicine & health
2
629 - Other branches of engineering
2
023 - Personnel management
1
025 - Library operations
1
174 - Occupational ethics
1
253 - Pastoral office & work
1
333 - Economics of land & energy
1
337 - International economics
1
339 - Macroeconomics & related topics
1
351 - Public administration
1
355 - Military science
1
371 - Schools & their activities; special education
1
374 - Adult education
1
519 - Probabilities & applied mathematics
1
more ...