@misc{indiciae24b17de172e3,
  title = {Municipal GIS database of El Salvador; Volume 1, Berlin, El Salvador},
  author = {Peter G. Chirico and P.P. Hearn and Ovidio Rivero Bartolomei and S.D. Tanner},
  year = {2002},
  doi = {10.3133/ofr02307a},
  url = {https://pubs.usgs.gov/publication/ofr02307A},
  note = {Source identifier: ofr02307A}
}