John Ramsbottom (ingeniero) (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "John Ramsbottom (ingeniero)" in Spanish language version.

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Para ilustraciones del diseño de Ramsbottom, véase «Safety Valve, Ramsbottom Valves». Henley's Encyclopedia of Practical Engineering. New York: The Normal W. Henley Publishing Company. 1908. Consultado el 13 de junio de 2009.

google.es

books.google.es

John Marshall (1974). Rail Facts and Feats. Two Continents Publishing Group. p. 255. ISBN 9780846700050. Consultado el 2 de enero de 2023.