Category:Telephone exchanges in Hertfordshire
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Media in category "Telephone exchanges in Hertfordshire"
The following 2 files are in this category, out of 2 total.
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Knebworth telephone exchange - geograph.org.uk - 97188.jpg 640 × 482; 135 KB
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Tring Telephone Exchange - geograph.org.uk - 987676.jpg 640 × 480; 61 KB