@misc{indiciae56b129fe1c02,
  title = {Resource potential for crushed stone, sand and gravel, and clay in the Charlotte 1° x 2° quadrangle, North Carolina and South Carolina},
  author = {Richard Goldsmith and J. Wright Horton and D.J. Milton and J. E. Gair and J. P. D’Agostino},
  year = {1986},
  doi = {10.3133/i1251m},
  url = {https://pubs.usgs.gov/publication/i1251M},
  note = {Source identifier: i1251M}
}