Classification
344 - Labor, social, education & cultural law
342
340 - Law
63
610 - Medicine & health
45
616 - Diseases
38
614 - Incidence & prevention of disease
29
170 - Ethics
22
410 - Linguistics
20
613 - Personal health & safety
20
174 - Occupational ethics
17
615 - Pharmacology & therapeutics
17
617 - Surgery & related medical specialties
15
618 - Gynecology, obstetrics, pediatrics & geriatrics
13
330 - Economics
12
320 - Political science
11
341 - Law of nations
9
570 - Life sciences; biology
9
343 - Military, tax, trade & industrial law
6
140 - Specific philosophical schools
5
300 - Social sciences
5
301 - Sociology & anthropology
5
333 - Economics of land & energy
4
361 - Social problems & social welfare in general
4
362 - Social welfare problems & services
4
380 - Commerce, communications & transportation
3
000 - Computer science, information & general works
2
100 - Philosophy & psychology
2
200 - Religion
2
306 - Culture & institutions
2
338 - Production
2
346 - Private law
2
363 - Other social problems & services
2
364 - Criminology
2
500 - Natural sciences & mathematics
2
612 - Human physiology
2
128 - Humankind
1
296 - Judaism
1
331 - Labor economics
1
332 - Financial economics
1
342 - Constitutional & administrative law
1
345 - Criminal law
1
353 - Specific fields of public administration
1
360 - Social problems & services; associations
1
370 - Education
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
571 - Physiology & related subjects
1
572 - Biochemistry
1
576 - Genetics & evolution
1
579 - Microorganisms, fungi & algae
1
599 - Mammals
1
more ...