Classification
330 - Economics
4
600 - Technology
620 - Engineering & allied operations
658 - General management
900 - History & geography
4
700 - The arts; fine & decorative arts
3
580 - Plants (Botany)
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
320 - Political science
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
780 - Music
1
800 - Literature & rhetoric
1