@misc{indiciaeeffcf4c242de,
  title = {Activities to explore acid rain and building stones},
  author = {Elaine S. McGee},
  year = {1995},
  doi = {10.3133/ofr95566},
  url = {https://pubs.usgs.gov/publication/ofr95566},
  note = {Source identifier: ofr95566}
}