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Technical manual: M24 Monarch Call Connect System / Planning Handbook Revised
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![Technical manual: M24 Monarch Call Connect System / Planning](https://coimages.sciencemuseumgroup.org.uk/245/729/small_thumbnail_2015_0497__0001_.jpg)
Technical manual: M24 Monarch Call Connect System / Planning Handbook Revised
Details
- Category:
- Archive
- Object Number:
- 2015-497
- Materials:
- paper (fibre product), metal plated (unknown) and plastic (unidentified)
- type:
- document
- credit:
- BT Heritage and Archives