A study of the Ypsilon IUD in Brazil.

@article{Rodrigues1975ASO,
  title={A study of the Ypsilon IUD in Brazil.},
  author={Wagner Rodrigues and Terezinha de Oliveira Nogueira},
  journal={Advances in planned parenthood},
  year={1975},
  volume={10 4},
  pages={221-3}
}