| national commercial banks | national security | navigation equipment |
| neckwear-manufacturers supplies | neckwear-manufacturers supplies manufacturers | neckwear manufacturers |
| neckwear mens | neckwear mens manufacturers | needles |
| new car dealers | new dealers | newspaper |
| newspaper distributors | newspaper publishers | news service |
| newsstand | news syndicates | no drivers |
| non | nonclassified establishments | noncommercial research organizations |
| nonferrous drawing | non ferrous foundry | nonferrous insulating |
| nonferrous rolling | nonferrous wiredrawing | nonmetallic mineral products |
| non profit organizations | nonresidential building operators | nonresidential construction |
| nonscheduled | nonwoven fabrics | nonwoven fabrics manufacturers |
| noodle | noodles manufacturers | novelties-ex prcs manufacturers |
| novelties ex prcs | novelty shops | nursery schools |
| nursing care | nursing convalescent homes | nursing home |
