@misc{indiciaea69c43b4f43d,
  title = {Systematic planning for environmental improvement.},
  author = {J M Michael},
  year = {1970},
  doi = {10.2105/ajph.60.7.1205},
  url = {https://pubmed.ncbi.nlm.nih.gov/5463803/},
  note = {Source identifier: 5463803}
}