- Engineering services (6)
- Architectural services (8)
- Surveying services (3)
- Accounting, auditing, and bookkeeping (9)
- Commercial physical research (2)
- Commercial nonphysical research (1)
- Noncommercial research organizations (4)
- Testing laboratories (1)
- Management services (20)
- Management consulting services (25)
- Public relations services (4)
- Facilities support services (1)
- Business consulting, nec (38)
