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