@misc{indiciaecb691c655bfa,
  title = {Potential source for crushed granite aggregate in Heard County, Georgia},
  author = {R. L. Atkins and Michael W. Higgins and Robert P. Dickerson},
  year = {1981},
  url = {https://pubs.usgs.gov/publication/70188670},
  note = {Source identifier: 70188670}
}