TY  - RPRT
TI  - Birth control.
AU  - R S Kirk
AU  - M B Williamson
AU  - K E Scheibe
PY  - 1970
DO  - 10.1126/science.170.3964.1256
UR  - https://pubmed.ncbi.nlm.nih.gov/5479005/
ID  - 5479005
ER  -