R. A. R. Bennett

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How to Make Electrical Machines: Enriched edition. Containing Full Directions for Making Electrical Machines, Induction Coils, Dynamos, and Many Novel Toys to Be Worked by ElectricityR. A. R. Bennett
How to Make Electrical Machines: Enriched edition. Containing Full Directions for Making Electrical Machines, Induction Coils, Dynamos, and Many Novel Toys to Be Worked by ElectricityR. A. R. Bennett