@misc{indiciaed3753438cea9,
  title = {Tables for computing oil royalties under the Leasing Act of February 25, 1920, as amended by the Act of August 21, 1935},
  author = {R.E. Spratt},
  year = {1941},
  doi = {10.3133/70048672},
  url = {https://pubs.usgs.gov/publication/70048672},
  note = {Source identifier: 70048672}
}