Classification
600 - Technology
791 - Public performances
380 - Commerce, communications & transportation
3
700 - The arts; fine & decorative arts
3
300 - Social sciences
2
320 - Political science
2
333 - Economics of land & energy
2
370 - Education
2
530 - Physics
2
620 - Engineering & allied operations
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
330 - Economics
1
340 - Law
1
610 - Medicine & health
1