Classification
333 - Economics of land & energy
658 - General management
363 - Other social problems & services
5
330 - Economics
4
000 - Computer science, information & general works
3
380 - Commerce, communications & transportation
3
576 - Genetics & evolution
3
610 - Medicine & health
3
100 - Philosophy & psychology
1
170 - Ethics
1
320 - Political science
1
338 - Production
1
370 - Education
1
530 - Physics
1
580 - Plants (Botany)
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1
800 - Literature & rhetoric
1
900 - History & geography
1