Classification
570 - Life sciences; biology
316
006 - Special computer methods
164
610 - Medicine & health
86
004 - Data processing & computer science
79
571 - Physiology & related subjects
33
572 - Biochemistry
30
621 - Applied physics
28
005 - Computer programming, programs & data
27
660 - Chemical engineering
27
500 - Natural sciences & mathematics
26
000 - Computer science, information & general works
25
612 - Human physiology
25
616 - Diseases
19
576 - Genetics & evolution
17
620 - Engineering & allied operations
15
580 - Plants (Botany)
14
611 - Human anatomy, cytology & histology
14
615 - Pharmacology & therapeutics
14
333 - Economics of land & energy
13
518 - Numerical analysis
11
579 - Microorganisms, fungi & algae
11
700 - The arts; fine & decorative arts
11
519 - Probabilities & applied mathematics
10
541 - Physical chemistry
10
600 - Technology
10
003 - Systems
9
577 - Ecology
8
599 - Mammals
8
614 - Incidence & prevention of disease
8
025 - Library operations
7
380 - Commerce, communications & transportation
7
560 - Paleontology; paleozoology
7
581 - Specific topics in natural history
6
363 - Other social problems & services
5
629 - Other branches of engineering
5
140 - Specific philosophical schools
4
720 - Architecture
4
515 - Analysis
3
530 - Physics
3
540 - Chemistry & allied sciences
3
630 - Agriculture & related technologies
3
900 - History & geography
3
511 - General principles of mathematics
2
535 - Light & infrared & ultraviolet phenomena
2
543 - Analytical chemistry
2
547 - Organic chemistry
2
551 - Geology, hydrology & meteorology
2
590 - Animals (Zoology)
2
591 - Specific topics in natural history
2
592 - Invertebrates
2
more ...