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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