Classification
000 - Computer science, information & general works
330 - Economics
33
657 - Accounting
17
333 - Economics of land & energy
16
600 - Technology
15
332 - Financial economics
12
320 - Political science
11
363 - Other social problems & services
11
380 - Commerce, communications & transportation
10
700 - The arts; fine & decorative arts
9
338 - Production
8
140 - Specific philosophical schools
6
551 - Geology, hydrology & meteorology
5
370 - Education
4
620 - Engineering & allied operations
4
658 - General management
4
170 - Ethics
3
339 - Macroeconomics & related topics
3
576 - Genetics & evolution
3
630 - Agriculture & related technologies
3
900 - History & geography
3
374 - Adult education
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
610 - Medicine & health
2
800 - Literature & rhetoric
2
300 - Social sciences
1
340 - Law
1
350 - Public administration & military science
1
361 - Social problems & social welfare in general
1
400 - Language
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
650 - Management & auxiliary services
1
720 - Architecture
1