@misc{indiciae838de8df2184,
  title = {Population and world economic development.},
  author = {J J SPENGLER},
  year = {1960},
  doi = {10.1126/science.131.3412.1497},
  url = {https://pubmed.ncbi.nlm.nih.gov/13833267/},
  note = {Source identifier: 13833267}
}