USO Case Book: Unidentified Submerged Objects Throughout History
| # | Entity ▲ | Mentions | View |
|---|---|---|---|
| 1 | Americans | 1 | Details |
| 2 | Aussies | 1 | Details |
| 3 | Australian | 8 | Details |
| 4 | Chilean | 1 | Details |
| 5 | Danish | 2 | Details |
| 6 | Dutch | 1 | Details |
| 7 | English | 2 | Details |
| 8 | German | 1 | Details |
| 9 | Persian | 4 | Details |
| 10 | Russian | 5 | Details |
| 11 | Russians | 1 | Details |
| 12 | Soviet | 14 | Details |
| 13 | Soviets | 2 | Details |
| 14 | USO | 26 | Details |