Classification
330 - Economics
400 - Language
600 - Technology
000 - Computer science, information & general works
17
700 - The arts; fine & decorative arts
17
900 - History & geography
13
620 - Engineering & allied operations
12
333 - Economics of land & energy
11
380 - Commerce, communications & transportation
11
363 - Other social problems & services
8
300 - Social sciences
7
370 - Education
7
140 - Specific philosophical schools
6
320 - Political science
6
410 - Linguistics
5
576 - Genetics & evolution
5
100 - Philosophy & psychology
4
340 - Law
4
500 - Natural sciences & mathematics
4
610 - Medicine & health
4
780 - Music
4
580 - Plants (Botany)
3
658 - General management
3
720 - Architecture
3
800 - Literature & rhetoric
3
304 - Factors affecting social behavior
2
630 - Agriculture & related technologies
2
160 - Logic
1
200 - Religion
1
301 - Sociology & anthropology
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
657 - Accounting
1