Classification
363 - Other social problems & services
2
551 - Geology, hydrology & meteorology
600 - Technology
2
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
2
900 - History & geography
333 - Economics of land & energy
1
380 - Commerce, communications & transportation
1
580 - Plants (Botany)
1
610 - Medicine & health
1