Classification
330 - Economics
380 - Commerce, communications & transportation
620 - Engineering & allied operations
658 - General management
600 - Technology
8
363 - Other social problems & services
6
700 - The arts; fine & decorative arts
6
900 - History & geography
5
333 - Economics of land & energy
4
000 - Computer science, information & general works
3
300 - Social sciences
3
320 - Political science
3
370 - Education
3
140 - Specific philosophical schools
2
384 - Communications; telecommunication
2
580 - Plants (Botany)
2
610 - Medicine & health
2
630 - Agriculture & related technologies
2
720 - Architecture
2
100 - Philosophy & psychology
1
302 - Social interaction
1
340 - Law
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
670 - Manufacturing
1
780 - Music
1
800 - Literature & rhetoric
1