@misc{indiciae29d78c7a99d3,
  title = {Population age structure.},
  author = {C A GOULD},
  year = {1954},
  doi = {10.1016/s0140-6736(54)90579-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/13213103/},
  note = {Source identifier: 13213103}
}