@misc{indiciae6e47a54ea28a,
  title = {Determination of sample sizes for epidemiological surveys using cluster sampling technique.},
  author = {L Jeyaseelan and P S Rao},
  year = {1989},
  url = {https://pubmed.ncbi.nlm.nih.gov/2784823/},
  note = {Source identifier: 2784823}
}