| 513120 |
Periodical publishers, exclusively on Internet |
| 513120 |
Professional magazine and periodical publishers |
| 513120 |
Professional magazine and periodical publishers (except exclusive Internet publishing) |
| 513120 |
Professional magazine and periodical publishers and printing combined |
| 513120 |
Professional magazine and periodical publishers, exclusively on Internet |
| 513120 |
Publishers (except exclusive Internet publishing), magazine |
| 513120 |
Publishers (except exclusive Internet publishing), periodical |
| 513120 |
Publishers, magazine |
| 513120 |
Publishers, magazine, combined with printing |
| 513120 |
Publishers, periodical |