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    A Description of the Differential Expansive Pumping Engine, Giving Practical Examples of Engines at Work, and a List of Some of the Engines Already Made, With Useful Notes and Formula for Pumps and Pumping Engines

    A Description of the Differential Expansive Pumping Engine, Giving Practical Examples of Engines at Work, and a List of Some of the Engines Already Made, With Useful Notes and Formula for Pumps and Pumping Engines

    $12.95 USD
    $12.95 USD
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    Henry Davey

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