Classification
380 - Commerce, communications & transportation
900 - History & geography
320 - Political science
3
800 - Literature & rhetoric
3
200 - Religion
2
580 - Plants (Botany)
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
300 - Social sciences
1
333 - Economics of land & energy
1
410 - Linguistics
1
600 - Technology
1
700 - The arts; fine & decorative arts
1