@misc{indiciae42f72c8c0dcf,
  title = {The elements of electrical engineering; a text book for technical schools and colleges. Vol. II. Alternating currents — Illustration, Page 223},
  year = {1908},
  url = {https://www.biodiversitylibrary.org/page/17500567},
  note = {Source identifier: page-17500567}
}