Classification
570 - Life sciences; biology
609
006 - Special computer methods
299
610 - Medicine & health
266
004 - Data processing & computer science
187
572 - Biochemistry
123
571 - Physiology & related subjects
86
616 - Diseases
76
005 - Computer programming, programs & data
68
000 - Computer science, information & general works
55
660 - Chemical engineering
49
612 - Human physiology
45
576 - Genetics & evolution
42
519 - Probabilities & applied mathematics
41
620 - Engineering & allied operations
41
580 - Plants (Botany)
36
500 - Natural sciences & mathematics
34
615 - Pharmacology & therapeutics
34
621 - Applied physics
34
333 - Economics of land & energy
33
700 - The arts; fine & decorative arts
33
003 - Systems
30
600 - Technology
28
518 - Numerical analysis
25
530 - Physics
24
363 - Other social problems & services
22
541 - Physical chemistry
22
170 - Ethics
21
630 - Agriculture & related technologies
19
579 - Microorganisms, fungi & algae
18
140 - Specific philosophical schools
16
581 - Specific topics in natural history
15
577 - Ecology
14
540 - Chemistry & allied sciences
13
380 - Commerce, communications & transportation
11
629 - Other branches of engineering
11
502 - Miscellany
10
515 - Analysis
10
547 - Organic chemistry
9
025 - Library operations
8
560 - Paleontology; paleozoology
8
611 - Human anatomy, cytology & histology
8
631 - Techniques, equipment & materials
8
550 - Earth sciences
7
658 - General management
7
511 - General principles of mathematics
6
535 - Light & infrared & ultraviolet phenomena
6
551 - Geology, hydrology & meteorology
6
599 - Mammals
6
614 - Incidence & prevention of disease
6
330 - Economics
5
more ...