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Radcliffe Tracts 48 (9)Richardson, John
Octary Arithmetic; or, The Art of Doubling and Halving by the Cypher: Containing a Perfect System of Measure and Weight, with Specimens of the New Logarithms
London: Longman, Hurst, Rees, Orme, and Brown, 1817.
[1934-41]
1817