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How Two Boys Made Their Own Electrical Apparatus summary:
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The Scholfield Wool-Carding Machines summary:
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Vegetable Dyes summary:
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Mine Pumping in Agricola's Time and Later summary:
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The Stoker's Catechism summary:
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Electricity for Boys summary:
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The Fabric of Civilization summary:
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The Flying Saucers are Real summary:
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Hints on the Use and Handling of Firearms Generally, and the Revolver in Particular summary:
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Aviation in Peace and War summary:
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