Classification
330 - Economics
4
000 - Computer science, information & general works
3
320 - Political science
2
332 - Financial economics
2
333 - Economics of land & energy
2
900 - History & geography
2
005 - Computer programming, programs & data
1
006 - Special computer methods
1
170 - Ethics
1
370 - Education
1
380 - Commerce, communications & transportation
1
530 - Physics
1
581 - Specific topics in natural history
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1