@misc{indiciae9faadf02cb28,
  title = {Management study of some aspects of Sistema de Informacoes Hidrologicas},
  author = {Ralph Newton Eicher},
  year = {1974},
  doi = {10.3133/ofr74353},
  url = {https://pubs.usgs.gov/publication/ofr74353},
  note = {Source identifier: ofr74353}
}