@misc{indiciaef8b4b341021b,
  title = {Hydrologic investigations program of the Water Resources Department, Ministry of Public Works and Communication, Imperial Ethiopian Government},
  author = {Walter Hofmann},
  year = {1968},
  doi = {10.3133/ofr73115},
  url = {https://pubs.usgs.gov/publication/ofr73115},
  note = {Source identifier: ofr73115}
}