5207586 Thermionic valves in the Marconi wireless telegraphy station at Cefn Du, near Caernarfon, Wales (colour litho) by Millar, Harold Robert (1869-1940); Private Collection; (add.info.: Thermionic valves in the Marconi wireless telegraphy station at Cefn Du, near Caernarfon, Wales. Illustration from Electical Wonders of the World, by Frederick A Talbot (Cassell & Company Ltd, London, New York, Toronto and Melbourne, 1921).); by Look and Learn.

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Creative#:

TOP27729025

Source:

達志影像

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RM

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須由TPG 完整授權

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No

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No

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No

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