| 541830 |
Media buying agencies |
| 541830 |
Media buying services |
| 541840 |
Advertising media representatives (i.e., independent of media owners) |
| 541840 |
Magazine advertising representatives (i.e., independent of media owners) |
| 541840 |
Media advertising representatives (i.e., independent of media owners) |
| 541840 |
Media representatives (i.e., independent of media owners) |
| 541840 |
Newspaper advertising representatives (i.e., independent of media owners) |
| 541840 |
Publishers' advertising representatives (i.e., independent of media owners) |
| 541840 |
Radio advertising representatives (i.e., independent of media owners) |
| 541840 |
Television advertising representatives (i.e., independent of media owners) |