Classification
140 - Specific philosophical schools
330 - Economics
9
333 - Economics of land & energy
658 - General management
600 - Technology
5
700 - The arts; fine & decorative arts
5
363 - Other social problems & services
4
630 - Agriculture & related technologies
4
000 - Computer science, information & general works
3
580 - Plants (Botany)
3
610 - Medicine & health
3
620 - Engineering & allied operations
3
297 - Islam, Babism & Bahai Faith
2
380 - Commerce, communications & transportation
2
581 - Specific topics in natural history
2
900 - History & geography
2
170 - Ethics
1
320 - Political science
1
370 - Education
1
410 - Linguistics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
720 - Architecture
1