| 513120 |
Internet periodical publishers |
| 513120 |
Juvenile magazine and periodical publishers |
| 513120 |
Juvenile magazine and periodical publishers (except exclusive Internet publishing) |
| 513120 |
Juvenile magazine and periodical publishers and printing combined |
| 513120 |
Juvenile magazine and periodical publishers, exclusively on Internet |
| 513120 |
Magazine publishers |
| 513120 |
Magazine publishers (except exclusive Internet publishing) |
| 513120 |
Magazine publishers and printing combined |
| 513120 |
Magazine publishers, exclusively on Internet |
| 513120 |
Medical journal and periodical publishers |