Classification
616 - Diseases
192
610 - Medicine & health
179
618 - Gynecology, obstetrics, pediatrics & geriatrics
42
700 - The arts; fine & decorative arts
34
613 - Personal health & safety
33
612 - Human physiology
25
570 - Life sciences; biology
24
617 - Surgery & related medical specialties
23
000 - Computer science, information & general works
19
580 - Plants (Botany)
15
615 - Pharmacology & therapeutics
15
333 - Economics of land & energy
14
614 - Incidence & prevention of disease
14
620 - Engineering & allied operations
12
330 - Economics
11
006 - Special computer methods
9
380 - Commerce, communications & transportation
9
540 - Chemistry & allied sciences
9
571 - Physiology & related subjects
9
140 - Specific philosophical schools
8
572 - Biochemistry
7
600 - Technology
7
900 - History & geography
6
641 - Food & drink
5
664 - Food technology
5
370 - Education
4
304 - Factors affecting social behavior
3
414 - Phonology & phonetics
3
576 - Genetics & evolution
3
660 - Chemical engineering
3
100 - Philosophy & psychology
2
170 - Ethics
2
306 - Culture & institutions
2
363 - Other social problems & services
2
500 - Natural sciences & mathematics
2
577 - Ecology
2
599 - Mammals
2
611 - Human anatomy, cytology & histology
2
001 - Knowledge
1
300 - Social sciences
1
301 - Sociology & anthropology
1
340 - Law
1
418 - Standard usage & applied linguistics
1
510 - Mathematics
1
515 - Analysis
1
519 - Probabilities & applied mathematics
1
573 - Specific physiological systems in animals
1
630 - Agriculture & related technologies
1
636 - Animal husbandry
1
658 - General management
1
more ...