@misc{indiciae4bc445d5693c,
  title = {Think before you sample data!},
  author = {P. E. Bourgeois and V. J. Sclafani and J.K. Summers and S. C. Robb and Beth A. Vairin},
  year = {1998},
  url = {https://pubs.usgs.gov/publication/70207769},
  note = {Source identifier: 70207769}
}