@misc{indiciae9fa1ed8aa0c2,
  title = {Norrisville quadrangle, Baltimore and Harford Counties, Maryland: Hydrogeology},
  author = {E. G. Otton},
  year = {1981},
  doi = {10.3133/ofr81127},
  url = {https://pubs.usgs.gov/publication/ofr81127},
  note = {Source identifier: ofr81127}
}