Classification
380 - Commerce, communications & transportation
600 - Technology
3
620 - Engineering & allied operations
3
000 - Computer science, information & general works
2
900 - History & geography
2
330 - Economics
1
333 - Economics of land & energy
1
500 - Natural sciences & mathematics
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1