Classification
380 - Commerce, communications & transportation
330 - Economics
11
320 - Political science
9
900 - History & geography
8
384 - Communications; telecommunication
7
658 - General management
7
000 - Computer science, information & general works
4
300 - Social sciences
3
580 - Plants (Botany)
3
800 - Literature & rhetoric
3
100 - Philosophy & psychology
2
140 - Specific philosophical schools
2
200 - Religion
2
302 - Social interaction
2
333 - Economics of land & energy
2
600 - Technology
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
120 - Epistemology, causation & humankind
1
150 - Psychology
1
170 - Ethics
1
410 - Linguistics
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
780 - Music
1