@misc{indiciaee3e8a58f27c7,
  title = {The elements of electrical engineering; a text book for technical schools and colleges. Vol. II. Alternating currents — Illustration, Page 56},
  year = {1908},
  url = {https://www.biodiversitylibrary.org/page/17500400},
  note = {Source identifier: page-17500400}
}