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Radcliffe Tracts 46 (13)Fox, Robert Were
"Description of some Improvements in the Dipping Needle Deflector together with a Chart and Table of the Dip, and Intensity of the Terrestrial Magnetism in Some Parts of England, Ireland, and Wales"
extract from the Report of the Royal Cornwall Polytechnic Society, for 1835. Falmouth: Printed by Jane Trathan, Bookbinder, etc., 1835.
[1934-41]
1835