TY  - RPRT
TI  - Recent advances in contraception.
AU  - R P Shearman
PY  - 1981
DO  - 10.5694/j.1326-5377.1981.tb135318.x
UR  - https://pubmed.ncbi.nlm.nih.gov/7231248/
ID  - 7231248
ER  -