Spermicidal times of commercial contraceptive materials-1959.
D003270:Contraceptive Agents / Q000494:pharmacology*; D003273:Contraceptive Devices; D005260:Female; D006801:Humans; D013089:Spermatocidal Agents
D003270:Contraceptive Agents; D013089:Spermatocidal Agents
CONTRACEPTIVES/pharmacology