Classification
330 - Economics
3
700 - The arts; fine & decorative arts
3
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
300 - Social sciences
1
320 - Political science
1
340 - Law
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
500 - Natural sciences & mathematics
1
530 - Physics
1
576 - Genetics & evolution
1
600 - Technology
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1