Classification
333 - Economics of land & energy
320 - Political science
467
330 - Economics
352
363 - Other social problems & services
244
610 - Medicine & health
124
600 - Technology
108
700 - The arts; fine & decorative arts
98
304 - Factors affecting social behavior
82
380 - Commerce, communications & transportation
66
900 - History & geography
65
000 - Computer science, information & general works
61
370 - Education
61
620 - Engineering & allied operations
58
140 - Specific philosophical schools
53
551 - Geology, hydrology & meteorology
50
630 - Agriculture & related technologies
50
340 - Law
44
530 - Physics
33
581 - Specific topics in natural history
30
338 - Production
28
580 - Plants (Botany)
27
300 - Social sciences
18
100 - Philosophy & psychology
16
576 - Genetics & evolution
15
200 - Religion
13
500 - Natural sciences & mathematics
13
720 - Architecture
13
336 - Public finance
12
658 - General management
10
361 - Social problems & social welfare in general
8
170 - Ethics
7
400 - Language
7
800 - Literature & rhetoric
7
297 - Islam, Babism & Bahai Faith
5
540 - Chemistry & allied sciences
5
350 - Public administration & military science
4
410 - Linguistics
4
301 - Sociology & anthropology
3
302 - Social interaction
3
414 - Phonology & phonetics
3
296 - Judaism
2
381 - Commerce
2
520 - Astronomy & allied sciences
2
550 - Earth sciences
2
621 - Applied physics
2
657 - Accounting
2
770 - Photography, photographs & computer art
2
780 - Music
2
791 - Public performances
2
303 - Social processes
1
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