@misc{indiciae0dcffb5349ac,
  title = {Conceptual frameworks},
  author = {Keunhyun Park and James B. Grace and Reid Ewing},
  year = {2020},
  doi = {10.4324/9780429325021-5},
  url = {https://pubs.usgs.gov/publication/70209715},
  note = {Source identifier: 70209715}
}