@misc{indiciae53d2cfce12c4,
  title = {The elements of electrical engineering; a text book for technical schools and colleges. Vol. II. Alternating currents — Illustration, Page 248},
  year = {1908},
  url = {https://www.biodiversitylibrary.org/page/17500592},
  note = {Source identifier: page-17500592}
}