@misc{indiciae2a0c5a757cbe,
  title = {A brief investigation of the surface-water hydrology of Yemen Arab Republic},
  author = {Henry Chiles Riggs},
  year = {1977},
  doi = {10.3133/ofr77150},
  url = {https://pubs.usgs.gov/publication/ofr77150},
  note = {Source identifier: ofr77150}
}