@misc{indiciae4681a0d7c6a3,
  title = {Shapefile for Coastal Zone Management Program counties of the United States and its territories, 2009 (CZMP\_counties\_2009.shp)},
  author = {Stephen R. Hartwell and Dana K. Wingfield and Alan O. Allwardt and Florence L. Wong and Frances L. Lightsom},
  year = {2013},
  doi = {10.3133/ofr20131284},
  url = {https://pubs.usgs.gov/publication/ofr20131284},
  note = {Source identifier: ofr20131284}
}