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Some of the next articles are maybe not open access.

[Copper - a major contraceptive agent?].

Contraception, fertilite, sexualite, 1988
B, Leroy-martin   +2 more
openaire   +1 more source

[Use of medroxyprogesterone as a contraceptive agent].

Revue francaise de gynecologie et d'obstetrique, 1972
G, Brun, H, Deloitte, C, Laffont
openaire   +1 more source

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