Classification
610 - Medicine & health
163
571 - Physiology & related subjects
87
616 - Diseases
40
572 - Biochemistry
37
620 - Engineering & allied operations
19
539 - Modern physics
16
612 - Human physiology
12
621 - Applied physics
12
617 - Surgery & related medical specialties
10
570 - Life sciences; biology
9
660 - Chemical engineering
8
530 - Physics
7
615 - Pharmacology & therapeutics
7
541 - Physical chemistry
6
534 - Sound & related vibrations
5
543 - Analytical chemistry
5
004 - Data processing & computer science
4
005 - Computer programming, programs & data
4
547 - Organic chemistry
4
573 - Specific physiological systems in animals
4
333 - Economics of land & energy
3
580 - Plants (Botany)
3
536 - Heat
2
537 - Electricity & electronics
2
538 - Magnetism
2
550 - Earth sciences
2
590 - Animals (Zoology)
2
611 - Human anatomy, cytology & histology
2
629 - Other branches of engineering
2
700 - The arts; fine & decorative arts
2
003 - Systems
1
006 - Special computer methods
1
500 - Natural sciences & mathematics
1
510 - Mathematics
1
515 - Analysis
1
519 - Probabilities & applied mathematics
1
523 - Specific celestial bodies & phenomena
1
526 - Mathematical geography
1
531 - Classical mechanics; solid mechanics
1
532 - Fluid mechanics; liquid mechanics
1
533 - Gas mechanics
1
535 - Light & infrared & ultraviolet phenomena
1
540 - Chemistry & allied sciences
1
577 - Ecology
1
630 - Agriculture & related technologies
1
636 - Animal husbandry
1
796 - Athletic & outdoor sports & games
1