@misc{indiciaed51fe130ed85,
  title = {The civil engineer's handbook; a convenient reference book for chainmen, rodmen, transitmen, levelers, surveyors, as well as draftsmen, computers, and railroad, municipal, and hydraulic engineers — Illustration, Page 157},
  year = {1913},
  url = {https://www.biodiversitylibrary.org/page/17470015},
  note = {Source identifier: page-17470015}
}