Classification
617 - Surgery & related medical specialties
277
610 - Medicine & health
210
700 - The arts; fine & decorative arts
107
900 - History & geography
79
000 - Computer science, information & general works
66
140 - Specific philosophical schools
57
580 - Plants (Botany)
54
380 - Commerce, communications & transportation
46
333 - Economics of land & energy
42
800 - Literature & rhetoric
41
330 - Economics
40
600 - Technology
40
616 - Diseases
36
370 - Education
34
400 - Language
30
384 - Communications; telecommunication
29
320 - Political science
28
540 - Chemistry & allied sciences
28
398 - Folklore
25
410 - Linguistics
24
301 - Sociology & anthropology
22
363 - Other social problems & services
22
570 - Life sciences; biology
20
304 - Factors affecting social behavior
17
620 - Engineering & allied operations
17
658 - General management
17
200 - Religion
14
300 - Social sciences
14
302 - Social interaction
14
615 - Pharmacology & therapeutics
14
780 - Music
13
576 - Genetics & evolution
12
612 - Human physiology
12
808 - Rhetoric & collections of literature
12
414 - Phonology & phonetics
9
907 - Education, research & related topics
8
306 - Culture & institutions
7
340 - Law
6
500 - Natural sciences & mathematics
6
100 - Philosophy & psychology
4
331 - Labor economics
4
551 - Geology, hydrology & meteorology
4
581 - Specific topics in natural history
4
630 - Agriculture & related technologies
4
940 - History of Europe
4
153 - Mental processes & intelligence
3
297 - Islam, Babism & Bahai Faith
3
670 - Manufacturing
3
770 - Photography, photographs & computer art
3
170 - Ethics
2
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