Classification
658 - General management
75
330 - Economics
47
300 - Social sciences
20
331 - Labor economics
14
650 - Management & auxiliary services
14
158 - Applied psychology
13
302 - Social interaction
13
338 - Production
13
384 - Communications; telecommunication
10
670 - Manufacturing
9
500 - Natural sciences & mathematics
8
800 - Literature & rhetoric
7
000 - Computer science, information & general works
6
332 - Financial economics
6
381 - Commerce
6
001 - Knowledge
5
659 - Advertising & public relations
5
005 - Computer programming, programs & data
4
153 - Mental processes & intelligence
4
380 - Commerce, communications & transportation
4
170 - Ethics
3
320 - Political science
3
006 - Special computer methods
2
174 - Occupational ethics
2
304 - Factors affecting social behavior
2
333 - Economics of land & energy
2
610 - Medicine & health
2
616 - Diseases
2
620 - Engineering & allied operations
2
808 - Rhetoric & collections of literature
2
003 - Systems
1
004 - Data processing & computer science
1
011 - Bibliographies
1
016 - Bibliographies of works on specific subjects
1
025 - Library operations
1
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
305 - Social groups
1
307 - Communities
1
322 - Relation of state to organized groups
1
340 - Law
1
355 - Military science
1
364 - Criminology
1
368 - Insurance
1
370 - Education
1
418 - Standard usage & applied linguistics
1
509 - Historical, geographic & persons treatment
1
613 - Personal health & safety
1
614 - Incidence & prevention of disease
1
618 - Gynecology, obstetrics, pediatrics & geriatrics
1
more ...