@misc{indiciae972d03398b93,
  title = {Field and office instructions in stream gauging for the Hydrological Survey of Zambia},
  author = {L. E. Bidwell},
  year = {1971},
  doi = {10.3133/ofr7324},
  url = {https://pubs.usgs.gov/publication/ofr7324},
  note = {Source identifier: ofr7324}
}