Peter Gray Books

Tables and Formula for the Computation of Life Contingencies

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Tables and Formula for the Computation of Life Contingencies

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Engineer's Valuing Assistant; Being a Practical Treatise on the Valuation of Collieries and Other Mines with Rules, Formulae, and Examples; Also a Set of Valuation Tables

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Tables for the Formation of Logarithms & Anti-Logarithms to Twenty-Four or Any Less Number of Places

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