Classification
658 - General management
330 - Economics
13
380 - Commerce, communications & transportation
11
600 - Technology
11
700 - The arts; fine & decorative arts
9
000 - Computer science, information & general works
8
333 - Economics of land & energy
7
610 - Medicine & health
7
808 - Rhetoric & collections of literature
6
576 - Genetics & evolution
5
580 - Plants (Botany)
5
620 - Engineering & allied operations
5
363 - Other social problems & services
4
370 - Education
4
900 - History & geography
4
140 - Specific philosophical schools
3
384 - Communications; telecommunication
3
381 - Commerce
2
400 - Language
2
630 - Agriculture & related technologies
2
320 - Political science
1
332 - Financial economics
1
336 - Public finance
1
338 - Production
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
740 - Drawing & decorative arts
1
745 - Decorative arts
1