Classification
320 - Political science
330 - Economics
520 - Astronomy & allied sciences
333 - Economics of land & energy
2
363 - Other social problems & services
2
297 - Islam, Babism & Bahai Faith
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
600 - Technology
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1