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T (Stack)Inglis, J. Gall
The 'Rapid' Decimal Calculator and Universal Reckoner for Decimal Money and Weights, Multiplication or Division to 150 x 100, Foreign Money Exchange, Proportion Sums, etc.
London: Gall & Inglis, [ca. 1943]. Presented by D. P. Styles Esq. Transferred to Bodleian, September 2017.
[1984-47]
1943?