@misc{indiciae8978b384e97a,
  title = {Short Course Introduction to Quantitative Mineral Resource Assessments},
  author = {Donald A. Singer},
  year = {2007},
  doi = {10.3133/ofr20071434},
  url = {https://pubs.usgs.gov/publication/ofr20071434},
  note = {Source identifier: ofr20071434}
}