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Economic History of Early Steam Engines. Routledge. p. 119. ISBN 978-1-317-36488-7. Allen, J.S. (1972). "The 1715 and other Newcomen Engines at Whitehaven...66 KB (7,446 words) - 02:18, 21 October 2024- Economic History of Early Steam Engines. Routledge. p. 119. ISBN 978-1-317-36488-7. Allen, J.S. (1972). "The 1715 and other Newcomen Engines at Whitehaven...57 KB (7,295 words) - 03:49, 24 July 2024
