- Engineering services (34)
- Architectural services (5)
- Accounting, auditing, and bookkeeping (27)
- Commercial physical research (3)
- Commercial nonphysical research (6)
- Noncommercial research organizations (2)
- Testing laboratories (4)
- Management services (32)
- Management consulting services (73)
- Public relations services (5)
- Business consulting, nec (85)
