Classification
000 - Computer science, information & general works
320 - Political science
330 - Economics
380 - Commerce, communications & transportation
657 - Accounting
333 - Economics of land & energy
2
600 - Technology
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
363 - Other social problems & services
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
620 - Engineering & allied operations
1
800 - Literature & rhetoric
1