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Sound ranging. Includes 1 photograph depicting: (Gun) sound ranging apparatus: tests....
Description and record details
| Reference | AVIA 7/2768 |
|---|---|
| Date | 1917-1936 |
| Description | Sound ranging. Includes 1 photograph depicting: (Gun) sound ranging apparatus: tests. Dated 1918. |
| Held by | The National Archives, Kew |
| Former reference in its original department | 1 |
| Legal status | Public Record(s) |
| Closure Status | Open Document, Open Description |
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Ministry of Aviation, predecessors and successors: Royal Radar Establishment and...
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