Classification
600 - Technology
5
620 - Engineering & allied operations
5
900 - History & geography
000 - Computer science, information & general works
2
320 - Political science
2
333 - Economics of land & energy
2
140 - Specific philosophical schools
1
380 - Commerce, communications & transportation
1
400 - Language
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1