The Cornish beam engine a survey of its history and development in the mines of Cornwall and Devon from before 1800 to the present day, with something of its use elsewhere in Britain and abroad [by] D ...
https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!367044~!0#focus ...
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