@misc{indiciaebb6a058d7c41,
  title = {Well installation and documentation, and ground-water sampling protocols for the pilot National Water-Quality Assessment Program},
  author = {M. A. Hardy and P.P. Leahy and W.M. Alley},
  year = {1989},
  doi = {10.3133/ofr89396},
  url = {https://pubs.usgs.gov/publication/ofr89396},
  note = {Source identifier: ofr89396}
}