Boettcher, B <br/><br/>
A possible mode of action of progestagen-only oral contraceptives.  [electronic resource] 

 -  Contraception  Feb 1974 
 - 123-31 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0010-7824 
<br/><br/><label>Standard No.: </label>10.1016/0010-7824(74)90025-0  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agglutination<br/>Blood<br/>Contraceptives, Oral--pharmacology<br/>Culture Media<br/>Estradiol--pharmacology<br/>Estriol--pharmacology<br/>Female<br/>Humans<br/>Male<br/>Microscopy, Phase-Contrast<br/>Progesterone--pharmacology<br/>Specimen Handling<br/>Spermatozoa--drug effects<br/>Testosterone--pharmacology