Classification
000 - Computer science, information & general works
2
320 - Political science
2
600 - Technology
2
610 - Medicine & health
700 - The arts; fine & decorative arts
2
170 - Ethics
1
330 - Economics
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
620 - Engineering & allied operations
1
900 - History & geography
1