Classification
610 - Medicine & health
409
700 - The arts; fine & decorative arts
169
000 - Computer science, information & general works
105
333 - Economics of land & energy
80
140 - Specific philosophical schools
77
363 - Other social problems & services
69
540 - Chemistry & allied sciences
58
580 - Plants (Botany)
52
600 - Technology
45
570 - Life sciences; biology
42
380 - Commerce, communications & transportation
36
612 - Human physiology
35
615 - Pharmacology & therapeutics
28
620 - Engineering & allied operations
27
500 - Natural sciences & mathematics
22
616 - Diseases
19
900 - History & geography
19
576 - Genetics & evolution
18
304 - Factors affecting social behavior
14
571 - Physiology & related subjects
14
370 - Education
11
100 - Philosophy & psychology
10
330 - Economics
10
630 - Agriculture & related technologies
6
800 - Literature & rhetoric
6
320 - Political science
5
340 - Law
5
400 - Language
5
414 - Phonology & phonetics
5
551 - Geology, hydrology & meteorology
5
572 - Biochemistry
4
581 - Specific topics in natural history
4
658 - General management
4
361 - Social problems & social welfare in general
3
530 - Physics
3
590 - Animals (Zoology)
3
664 - Food technology
3
120 - Epistemology, causation & humankind
2
170 - Ethics
2
300 - Social sciences
2
660 - Chemical engineering
2
720 - Architecture
2
301 - Sociology & anthropology
1
362 - Social welfare problems & services
1
535 - Light & infrared & ultraviolet phenomena
1
547 - Organic chemistry
1
553 - Economic geology
1
579 - Microorganisms, fungi & algae
1
613 - Personal health & safety
1
614 - Incidence & prevention of disease
1
more ...