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