| ID | 157437 |
| Title Proper | Periscope feather |
| Language | ENG |
| Author | Sutton, Hi |
| `In' analytical Note | Jane's Intelligence Review Vol. 30, No.1; Jan 2018: p.54-57 |
| Journal Source | Jane's Intelligence Review 2018-01 30, 1 |
| Key Words | submarine ; Social Media Intelligence ; Operational Security |