Intensity coils : how made and how used : with a description of the electric light, electric bells, electric motors, the telephone, the microphone and the phonograph / "by ""Dyer"" , the right of translation is reserved" .— 17 edition .— : Published by the proprietors Perken Son & Rayment, 1891 .— 306 с. — Lang: eng .— URL: https://rucont.ru/efd/108341 (дата обращения: 16.07.2024)