@misc{indiciaec29571c99fa9,
  title = {The modernization program of the US Geological Survey's National Mapping Division},
  author = {Kirk E. Anderson and G.M. Callahan},
  year = {2013},
  doi = {10.1559/152304090783814168},
  url = {https://pubs.usgs.gov/publication/70015755},
  note = {Source identifier: 70015755}
}