Epidemiology of smallpox in West Pakistan. II. Determinants of intravillage spread other than acquired immunity.

@article{Mack1972EpidemiologyOS,
  title={Epidemiology of smallpox in West Pakistan. II. Determinants of intravillage spread other than acquired immunity.},
  author={Thomas M. Mack and David J Thomas and M Muzaffar Khan},
  journal={American journal of epidemiology},
  year={1972},
  volume={95 2},
  pages={169-77}
}