The Dark Frontier
| Author | Eric Ambler |
| Genre | Novel, Thriller, Spy Fiction |
| Original Language | English |
| First published | 1936 |
| Links |
Editions 3
Add Edition | Der dunkle Grenzbezirk | Paperback | German | Switzerland | 1936 |
 | Der dunkle Grenzbezirk | Paperback | German | Switzerland | 1936 |
 | Der dunkle Grenzbezirk | Paperback | German | Zürich | 1979 |
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