TY  - SER
AU  - Riddle, John M.
AU  - Estes, J. Worth
TI  - Oral contraceptives in ancient and medieval times : how did some ancient societies control their fertility ?: Perhaps premodern women ..
PY  - 1992///
KW  - Pharmacology
N2  - Contraceptives; Fertility; Medicinal plants; Sexual behaviour; Pharmaceuticals; Birth control; Middle ages
ER  -