@misc{indiciae592d25b2c796,
  title = {Zero Population Growth, Inc.: a second study.},
  author = {L D Barnett},
  year = {1974},
  doi = {10.1017/s0021932000009470},
  url = {https://pubmed.ncbi.nlm.nih.gov/4857197/},
  note = {Source identifier: 4857197}
}