Classification
670 - Manufacturing
658 - General management
6
330 - Economics
4
338 - Production
2
000 - Computer science, information & general works
1
153 - Mental processes & intelligence
1
300 - Social sciences
1
302 - Social interaction
1
304 - Factors affecting social behavior
1
331 - Labor economics
1
333 - Economics of land & energy
1
500 - Natural sciences & mathematics
1
620 - Engineering & allied operations
1