Classification
000 - Computer science, information & general works
3
330 - Economics
3
333 - Economics of land & energy
4
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
600 - Technology
620 - Engineering & allied operations
4
700 - The arts; fine & decorative arts
720 - Architecture
3
900 - History & geography