Classification
330 - Economics
98
320 - Political science
81
700 - The arts; fine & decorative arts
58
000 - Computer science, information & general works
56
333 - Economics of land & energy
54
600 - Technology
49
340 - Law
46
900 - History & geography
41
610 - Medicine & health
37
620 - Engineering & allied operations
32
363 - Other social problems & services
28
140 - Specific philosophical schools
24
380 - Commerce, communications & transportation
22
576 - Genetics & evolution
22
500 - Natural sciences & mathematics
14
551 - Geology, hydrology & meteorology
11
580 - Plants (Botany)
11
570 - Life sciences; biology
10
540 - Chemistry & allied sciences
9
530 - Physics
8
300 - Social sciences
7
410 - Linguistics
6
581 - Specific topics in natural history
6
800 - Literature & rhetoric
6
400 - Language
5
615 - Pharmacology & therapeutics
5
658 - General management
5
720 - Architecture
5
100 - Philosophy & psychology
3
304 - Factors affecting social behavior
3
414 - Phonology & phonetics
3
630 - Agriculture & related technologies
3
297 - Islam, Babism & Bahai Faith
2
341 - Law of nations
2
370 - Education
2
650 - Management & auxiliary services
2
657 - Accounting
2
770 - Photography, photographs & computer art
2
791 - Public performances
2
940 - History of Europe
2
170 - Ethics
1
200 - Religion
1
301 - Sociology & anthropology
1
361 - Social problems & social welfare in general
1
384 - Communications; telecommunication
1
520 - Astronomy & allied sciences
1
543 - Analytical chemistry
1
547 - Organic chemistry
1
612 - Human physiology
1
628 - Sanitary & municipal engineering
1
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