@misc{indiciaec1385b072f24,
  title = {SPECTRAL REFLECTANCE METHOD TO MEASURE ACID DEPOSITION EFFECTS ON BUILDING STONE.},
  author = {Marguerite J. Kingston and Cathy M. Ager},
  year = {1985},
  url = {https://pubs.usgs.gov/publication/70013279},
  note = {Source identifier: 70013279}
}