Classification
330 - Economics
400 - Language
700 - The arts; fine & decorative arts
31
380 - Commerce, communications & transportation
27
000 - Computer science, information & general works
26
600 - Technology
26
333 - Economics of land & energy
24
900 - History & geography
20
410 - Linguistics
18
320 - Political science
17
363 - Other social problems & services
14
370 - Education
14
620 - Engineering & allied operations
14
300 - Social sciences
13
140 - Specific philosophical schools
11
100 - Philosophy & psychology
9
340 - Law
9
658 - General management
7
780 - Music
7
800 - Literature & rhetoric
7
576 - Genetics & evolution
6
610 - Medicine & health
6
304 - Factors affecting social behavior
5
200 - Religion
4
301 - Sociology & anthropology
4
500 - Natural sciences & mathematics
4
580 - Plants (Botany)
4
720 - Architecture
3
297 - Islam, Babism & Bahai Faith
2
551 - Geology, hydrology & meteorology
2
630 - Agriculture & related technologies
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
350 - Public administration & military science
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
657 - Accounting
1
770 - Photography, photographs & computer art
1
791 - Public performances
1