Classification
610 - Medicine & health
1,019
330 - Economics
103
700 - The arts; fine & decorative arts
101
170 - Ethics
51
600 - Technology
43
140 - Specific philosophical schools
27
580 - Plants (Botany)
27
100 - Philosophy & psychology
24
000 - Computer science, information & general works
23
370 - Education
23
800 - Literature & rhetoric
19
363 - Other social problems & services
18
612 - Human physiology
14
616 - Diseases
14
380 - Commerce, communications & transportation
11
620 - Engineering & allied operations
11
576 - Genetics & evolution
9
900 - History & geography
9
540 - Chemistry & allied sciences
8
340 - Law
7
300 - Social sciences
6
361 - Social problems & social welfare in general
6
615 - Pharmacology & therapeutics
6
630 - Agriculture & related technologies
5
362 - Social welfare problems & services
4
581 - Specific topics in natural history
4
338 - Production
3
507 - Education, research & related topics
3
001 - Knowledge
2
174 - Occupational ethics
2
301 - Sociology & anthropology
2
320 - Political science
2
551 - Geology, hydrology & meteorology
2
628 - Sanitary & municipal engineering
2
304 - Factors affecting social behavior
1
305 - Social groups
1
306 - Culture & institutions
1
344 - Labor, social, education & cultural law
1
346 - Private law
1
353 - Specific fields of public administration
1
500 - Natural sciences & mathematics
1
501 - Philosophy & theory
1
502 - Miscellany
1
509 - Historical, geographic & persons treatment
1
570 - Life sciences; biology
1
572 - Biochemistry
1
579 - Microorganisms, fungi & algae
1
614 - Incidence & prevention of disease
1
618 - Gynecology, obstetrics, pediatrics & geriatrics
1
629 - Other branches of engineering
1
more ...