Induction coils - how to make, use, and repair them including Ruhmkorff, Tesla, and medical coils, Roentgen radiography, wireless telegraphy, and practical information on primary and secondary battery

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License: Licensed
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Keywords: +, ancient, antique, blackletter, book, books, borders, bygone, calligraphic, calligraphy, cover, draw, drawing, font, historic, history, illustration, image, letter, lettering, manuscript, map, ornate, page, pages, scan, sketch, vintage