Classification
330 - Economics
8
000 - Computer science, information & general works
5
500 - Natural sciences & mathematics
4
700 - The arts; fine & decorative arts
3
320 - Political science
2
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
2
530 - Physics
2
576 - Genetics & evolution
2
340 - Law
1
610 - Medicine & health
1
620 - Engineering & allied operations
1