@misc{indiciae82ac7eb1d489,
  title = {Ground-water resources of the lower Santiam River Basin, middle Willamette Valley, Oregon},
  author = {Donald C. Helm and Alvin Riley Leonard},
  year = {1977},
  doi = {10.3133/ofr76334},
  url = {https://pubs.usgs.gov/publication/ofr76334},
  note = {Source identifier: ofr76334}
}