Classification
500 - Natural sciences & mathematics
12
330 - Economics
8
658 - General management
8
351 - Public administration
5
352 - General considerations of public administration
5
331 - Labor economics
4
338 - Production
3
333 - Economics of land & energy
2
001 - Knowledge
1
153 - Mental processes & intelligence
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
307 - Communities
1
344 - Labor, social, education & cultural law
1
355 - Military science
1
363 - Other social problems & services
1
381 - Commerce
1
384 - Communications; telecommunication
1
620 - Engineering & allied operations
1
659 - Advertising & public relations
1
800 - Literature & rhetoric
1