Classification
650 - Management & auxiliary services
347
658 - General management
248
330 - Economics
155
331 - Labor economics
113
158 - Applied psychology
101
302 - Social interaction
48
000 - Computer science, information & general works
41
300 - Social sciences
32
381 - Commerce
23
500 - Natural sciences & mathematics
18
670 - Manufacturing
18
380 - Commerce, communications & transportation
11
384 - Communications; telecommunication
11
338 - Production
10
153 - Mental processes & intelligence
9
006 - Special computer methods
7
303 - Social processes
7
370 - Education
6
004 - Data processing & computer science
5
332 - Financial economics
5
333 - Economics of land & energy
5
620 - Engineering & allied operations
5
005 - Computer programming, programs & data
4
020 - Library & information sciences
3
170 - Ethics
3
001 - Knowledge
2
150 - Psychology
2
152 - Perception, movement, emotions & drives
2
155 - Differential & developmental psychology
2
304 - Factors affecting social behavior
2
306 - Culture & institutions
2
346 - Private law
2
363 - Other social problems & services
2
371 - Schools & their activities; special education
2
657 - Accounting
2
016 - Bibliographies of works on specific subjects
1
100 - Philosophy & psychology
1
294 - Religions of Indic origin
1
305 - Social groups
1
320 - Political science
1
339 - Macroeconomics & related topics
1
352 - General considerations of public administration
1
368 - Insurance
1
374 - Adult education
1
378 - Higher education
1
507 - Education, research & related topics
1
510 - Mathematics
1
519 - Probabilities & applied mathematics
1
610 - Medicine & health
1
616 - Diseases
1
more ...