Classification
610 - Medicine & health
111
000 - Computer science, information & general works
81
700 - The arts; fine & decorative arts
63
580 - Plants (Botany)
54
333 - Economics of land & energy
52
600 - Technology
35
570 - Life sciences; biology
32
363 - Other social problems & services
31
620 - Engineering & allied operations
31
576 - Genetics & evolution
24
630 - Agriculture & related technologies
23
581 - Specific topics in natural history
22
140 - Specific philosophical schools
21
900 - History & geography
20
380 - Commerce, communications & transportation
17
500 - Natural sciences & mathematics
15
414 - Phonology & phonetics
11
551 - Geology, hydrology & meteorology
11
540 - Chemistry & allied sciences
10
304 - Factors affecting social behavior
8
330 - Economics
8
612 - Human physiology
8
720 - Architecture
8
800 - Literature & rhetoric
7
615 - Pharmacology & therapeutics
6
340 - Law
4
400 - Language
4
658 - General management
4
100 - Philosophy & psychology
3
170 - Ethics
3
320 - Political science
3
300 - Social sciences
2
370 - Education
2
616 - Diseases
2
301 - Sociology & anthropology
1
361 - Social problems & social welfare in general
1
539 - Modern physics
1
617 - Surgery & related medical specialties
1
770 - Photography, photographs & computer art
1
920 - Biography, genealogy & insignia
1