@misc{indiciae360a2b686440,
  title = {Catalog of available clear mylar templates used to determine latitude and longitude of sample localities at scales of 1:24,000, 1:62,500, 1:1,000,000 and 1:250,000 between the latitude of 25 degrees 30' and 49 degrees north or south latitude},
  author = {W. L. Campbell and George VanTrump},
  year = {1981},
  doi = {10.3133/ofr81746},
  url = {https://pubs.usgs.gov/publication/ofr81746},
  note = {Source identifier: ofr81746}
}