Immunization against pregnancy.

@article{Hearn1976ImmunizationAP,
  title={Immunization against pregnancy.},
  author={John P. Hearn},
  journal={Proceedings of the Royal Society of London. Series B, Biological sciences},
  year={1976},
  volume={195 1118},
  pages={149-60}
}
  • John P. Hearn
  • Published 1976 in
    Proceedings of the Royal Society of London…