1. Pastillas anticonceptivas de emergencia: Emergency contraceptive pills Publication: [Princeton, N.J.] : Reproductive Health Technologies Project, [19--?] Subject(s): Contraception, PostcoitalContraceptives, Postcoital
2. Píldoras anticonceptivas de emergencia Publication: Research Triangle Park, N.C. : Family Health International, c1999 Subject(s): Contraception, PostcoitalContraceptives, Postcoital
