@misc{indiciaeb28b38d3f638,
  title = {Mineralogical characterization of the Shelburne Marble and the Salem Limestone; test stones used to study the effects of acid rain},
  author = {E. S. McGee},
  year = {1989},
  doi = {10.3133/b1889},
  url = {https://pubs.usgs.gov/publication/b1889},
  note = {Source identifier: b1889}
}