Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
320 - Political science
1
330 - Economics
333 - Economics of land & energy
2
363 - Other social problems & services
370 - Education
1
380 - Commerce, communications & transportation
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
2
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
600 - Technology
2
610 - Medicine & health
1
620 - Engineering & allied operations
1
657 - Accounting
700 - The arts; fine & decorative arts
1