@misc{indiciae3cf6712e7339,
  title = {Construction materials map of Anchorage and vicinity, Alaska},
  author = {H. R. Schmoll and Ernest Dobrovolny},
  year = {1973},
  doi = {10.3133/i787c},
  url = {https://pubs.usgs.gov/publication/i787C},
  note = {Source identifier: i787C}
}