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Electro Wizard Inventions

Penny Norman

出版	Norman & Globus, Incorporated, 1997
主題	Science / GeneralScience / Physics / General
ISBN	18869780349781886978034
URL	http://books.google.com.hk/books?id=pwTRPAAACAAJ&hl=&source=gbs_api

註釋

Describes how to build a working radio, spinning motor, clicking telegraph, and flashing generator. Includes materials to build each item.