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2016). History of Technology. Bloomsbury Publishing. pp. 58–. ISBN 978-1-350-01904-1. Hills, Richard Leslie (2002), Life and Inventions of Richard Roberts...11 KB (1,337 words) - 04:18, 22 March 2024
 | 2016). History of Technology. Bloomsbury Publishing. pp. 58–. ISBN 978-1-350-01904-1. Hills, Richard Leslie (2002), Life and Inventions of Richard Roberts... 11 KB (1,337 words) - 04:18, 22 March 2024 |