- Market analysis, business, and economic research (20)
- Business analysis (2)
- Business economic service (8)
- Business research service (12)
- Economic research (2)
- Market analysis or research (41)
- Merger, acquisition, and reorganization research (6)
- Research services, except laboratory (11)
- Survey service: marketing, location, etc. (6)
- Educational research (8)
- Sociological research (1)
