Classification
620 - Engineering & allied operations
658 - General management
600 - Technology
9
900 - History & geography
8
330 - Economics
7
700 - The arts; fine & decorative arts
7
363 - Other social problems & services
5
333 - Economics of land & energy
4
380 - Commerce, communications & transportation
4
000 - Computer science, information & general works
3
320 - Political science
3
370 - Education
3
576 - Genetics & evolution
3
381 - Commerce
2
610 - Medicine & health
2
720 - Architecture
2
745 - Decorative arts
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
300 - Social sciences
1
500 - Natural sciences & mathematics
1
510 - Mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
688 - Other final products & packaging
1
800 - Literature & rhetoric
1