Classification
001 - Knowledge
2
331 - Labor economics
2
500 - Natural sciences & mathematics
2
600 - Technology
2
658 - General management
2
004 - Data processing & computer science
1
303 - Social processes
1
330 - Economics
1
338 - Production
1
384 - Communications; telecommunication
1
388 - Transportation; ground transportation
1
604 - Special topics
1