Browsing K-State Libraries Digital Collections by Subject "Lamp Signalling Systems"

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Browsing K-State Libraries Digital Collections by Subject "Lamp Signalling Systems"

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  • Hess, Harry P.; Wolf, George
    Introduction (thesis A): The history of the telephone, from the most crude methods of speech transmission to its present Perfection, is a most interesting one. The knowledge of the principles of electromagnetism dates back ...

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