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John R Baker. 'The Spermicidal Powers of Chemical Contraceptives. II Pure Substances. ' Reprint, Journal of Hygiene Vol XXXI, No. 2
- Date:
- Apr 1931
- Reference:
- SA/FPA/SR24A/2
Licence: In copyright
Credit: John R Baker. 'The Spermicidal Powers of Chemical Contraceptives. II Pure Substances. ' Reprint, Journal of Hygiene Vol XXXI, No. 2. Source: Wellcome Collection.
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