Classification
576 - Genetics & evolution
620 - Engineering & allied operations
600 - Technology
3
900 - History & geography
3
330 - Economics
2
700 - The arts; fine & decorative arts
2
800 - Literature & rhetoric
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
400 - Language
1
580 - Plants (Botany)
1
658 - General management
1