@misc{indiciae26b7e7baa3c7,
  title = {Unsteady propeller forces, fundamental hydrodynamics [and] unconventional propulsion — Illustration, Page 1399},
  year = {1971},
  url = {https://www.biodiversitylibrary.org/page/26534207},
  note = {Source identifier: page-26534207}
}