Classification
001 - Knowledge
1
170 - Ethics
174 - Occupational ethics
2
300 - Social sciences
2
302 - Social interaction
2
304 - Factors affecting social behavior
1
330 - Economics
9
331 - Labor economics
333 - Economics of land & energy
1
338 - Production
2
381 - Commerce
1
384 - Communications; telecommunication
1
658 - General management
7
670 - Manufacturing
1