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Title: Series of pianoforte steel wires, made according to James Ho [Go to resource]
Description: Series of pianoforte steel wires, made according to James Horsfall's patent, communicated by Dr. Pole License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1889-164/3609 Go to resource More Like this...
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