Classification
330 - Economics
620 - Engineering & allied operations
600 - Technology
377
900 - History & geography
248
333 - Economics of land & energy
236
700 - The arts; fine & decorative arts
207
363 - Other social problems & services
159
000 - Computer science, information & general works
117
380 - Commerce, communications & transportation
75
630 - Agriculture & related technologies
73
320 - Political science
65
610 - Medicine & health
63
580 - Plants (Botany)
61
140 - Specific philosophical schools
48
370 - Education
43
551 - Geology, hydrology & meteorology
39
720 - Architecture
37
576 - Genetics & evolution
34
658 - General management
34
500 - Natural sciences & mathematics
27
540 - Chemistry & allied sciences
27
300 - Social sciences
24
340 - Law
23
581 - Specific topics in natural history
21
100 - Philosophy & psychology
17
800 - Literature & rhetoric
15
400 - Language
14
414 - Phonology & phonetics
13
170 - Ethics
11
304 - Factors affecting social behavior
9
780 - Music
8
301 - Sociology & anthropology
7
530 - Physics
7
200 - Religion
5
410 - Linguistics
5
657 - Accounting
5
297 - Islam, Babism & Bahai Faith
4
350 - Public administration & military science
4
361 - Social problems & social welfare in general
3
615 - Pharmacology & therapeutics
3
770 - Photography, photographs & computer art
2
791 - Public performances
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
336 - Public finance
1
360 - Social problems & services; associations
1