Classification
610 - Medicine & health
32
616 - Diseases
11
500 - Natural sciences & mathematics
7
615 - Pharmacology & therapeutics
7
570 - Life sciences; biology
5
600 - Technology
3
612 - Human physiology
3
613 - Personal health & safety
3
614 - Incidence & prevention of disease
3
618 - Gynecology, obstetrics, pediatrics & geriatrics
3
641 - Food & drink
3
664 - Food technology
3
900 - History & geography
3
305 - Social groups
2
320 - Political science
2
330 - Economics
2
353 - Specific fields of public administration
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
001 - Knowledge
1
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
158 - Applied psychology
1
170 - Ethics
1
174 - Occupational ethics
1
301 - Sociology & anthropology
1
302 - Social interaction
1
306 - Culture & institutions
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
510 - Mathematics
1
519 - Probabilities & applied mathematics
1
540 - Chemistry & allied sciences
1
579 - Microorganisms, fungi & algae
1
629 - Other branches of engineering
1
770 - Photography, photographs & computer art
1