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Radcliffe Tracts 46 (11)Dent, Edward J.
A Description of the Dipleidoscope, or Double-Reflecting Meridian and Altitude Instrument; with Plain Instructions for the Method of Using it in the Correction of Time-Keepers
London: Published by the Author, no. 82, Strand, and 33, Cockspur-Street, 1843.
[1934-41]
1843