@misc{indiciae49e449c20c5e,
  title = {Resources, population growth, and level of living},
  author = {V.E. McKelvey},
  year = {1959},
  doi = {10.1126/science.129.3353.875},
  url = {https://pubs.usgs.gov/publication/70010727},
  note = {Source identifier: 70010727}
}