Classification
000 - Computer science, information & general works
300 - Social sciences
320 - Political science
1
333 - Economics of land & energy
1
363 - Other social problems & services
370 - Education
1
500 - Natural sciences & mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
551 - Geology, hydrology & meteorology
1
600 - Technology
620 - Engineering & allied operations
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1