Classification
362 - Social welfare problems & services
336
658 - General management
95
610 - Medicine & health
94
338 - Production
23
300 - Social sciences
22
613 - Personal health & safety
16
614 - Incidence & prevention of disease
16
330 - Economics
15
306 - Culture & institutions
11
353 - Specific fields of public administration
11
616 - Diseases
11
617 - Surgery & related medical specialties
10
621 - Applied physics
10
302 - Social interaction
9
003 - Systems
8
500 - Natural sciences & mathematics
8
657 - Accounting
7
006 - Special computer methods
5
343 - Military, tax, trade & industrial law
5
519 - Probabilities & applied mathematics
5
570 - Life sciences; biology
5
005 - Computer programming, programs & data
4
301 - Sociology & anthropology
4
381 - Commerce
4
615 - Pharmacology & therapeutics
4
620 - Engineering & allied operations
4
001 - Knowledge
3
331 - Labor economics
3
700 - The arts; fine & decorative arts
3
158 - Applied psychology
2
174 - Occupational ethics
2
340 - Law
2
352 - General considerations of public administration
2
361 - Social problems & social welfare in general
2
374 - Adult education
2
384 - Communications; telecommunication
2
571 - Physiology & related subjects
2
650 - Management & auxiliary services
2
651 - Office services
2
670 - Manufacturing
2
000 - Computer science, information & general works
1
004 - Data processing & computer science
1
140 - Specific philosophical schools
1
150 - Psychology
1
155 - Differential & developmental psychology
1
170 - Ethics
1
344 - Labor, social, education & cultural law
1
346 - Private law
1
355 - Military science
1
363 - Other social problems & services
1
more ...