Classification
610 - Medicine & health
196
616 - Diseases
195
700 - The arts; fine & decorative arts
31
617 - Surgery & related medical specialties
23
140 - Specific philosophical schools
22
330 - Economics
21
000 - Computer science, information & general works
17
600 - Technology
15
614 - Incidence & prevention of disease
14
576 - Genetics & evolution
12
579 - Microorganisms, fungi & algae
12
380 - Commerce, communications & transportation
11
615 - Pharmacology & therapeutics
11
300 - Social sciences
10
333 - Economics of land & energy
10
363 - Other social problems & services
10
613 - Personal health & safety
9
304 - Factors affecting social behavior
8
370 - Education
8
571 - Physiology & related subjects
8
551 - Geology, hydrology & meteorology
7
570 - Life sciences; biology
6
301 - Sociology & anthropology
5
320 - Political science
5
500 - Natural sciences & mathematics
5
540 - Chemistry & allied sciences
5
580 - Plants (Botany)
5
612 - Human physiology
5
658 - General management
5
900 - History & geography
5
100 - Philosophy & psychology
4
170 - Ethics
4
519 - Probabilities & applied mathematics
4
618 - Gynecology, obstetrics, pediatrics & geriatrics
4
620 - Engineering & allied operations
4
572 - Biochemistry
2
590 - Animals (Zoology)
2
003 - Systems
1
005 - Computer programming, programs & data
1
306 - Culture & institutions
1
331 - Labor economics
1
353 - Specific fields of public administration
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
410 - Linguistics
1
414 - Phonology & phonetics
1
502 - Miscellany
1
530 - Physics
1
581 - Specific topics in natural history
1
more ...