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John Christie Douglas
Books by John Christie Douglas
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books found
A Manual of Telegraph Construction: The Mechanical Elements…
By:
John Christie Douglas
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A manual of telegraph construction: the mechanical elements…
By:
John Christie Douglas
View Details
![A Manual of Telegraph Construction: The Mechanical Elements of Electric Telegraph Engineering [1877]](https://www.ebooknetworking.net/books/111/258/med1112583661.jpg)
