3 "Fișier:Heroes_of_the_telegraph_-_Charles_Wheatstone.jpg".

Fișier:Heroes of the telegraph - Charles Wheatstone.jpg

Heroes of the telegraph Author Munro, John, 1849-1930 Title Heroes of the telegraph Publisher London, The Religious tract society Description The metadata...

Fișier:Heroes of the telegraph (IA cu31924031222494).pdf

Heroes of the telegraph - Charles Wheatstone.jpg...

Fișier:Wheatstone Charles.jpg

DescriptionWheatstone Charles.jpg sketch of Sir Charles Wheatstone Date 1891 Source Frontispiece of Heroes of the Telegraph Author J. Munro...

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