Classification
000 - Computer science, information & general works
3
380 - Commerce, communications & transportation
3
700 - The arts; fine & decorative arts
3
500 - Natural sciences & mathematics
2
600 - Technology
2
330 - Economics
1
333 - Economics of land & energy
1
576 - Genetics & evolution
1
620 - Engineering & allied operations
1
658 - General management
1
900 - History & geography
1