Classification
370 - Education
380 - Commerce, communications & transportation
333 - Economics of land & energy
20
330 - Economics
19
700 - The arts; fine & decorative arts
18
600 - Technology
16
363 - Other social problems & services
13
000 - Computer science, information & general works
11
140 - Specific philosophical schools
10
900 - History & geography
10
320 - Political science
8
610 - Medicine & health
8
551 - Geology, hydrology & meteorology
7
658 - General management
6
576 - Genetics & evolution
5
620 - Engineering & allied operations
5
581 - Specific topics in natural history
4
720 - Architecture
3
304 - Factors affecting social behavior
2
500 - Natural sciences & mathematics
2
580 - Plants (Botany)
2
630 - Agriculture & related technologies
2
791 - Public performances
2
100 - Philosophy & psychology
1
160 - Logic
1
170 - Ethics
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
340 - Law
1
410 - Linguistics
1
414 - Phonology & phonetics
1
800 - Literature & rhetoric
1