Butenandt, A <br/><br/>
Isolation of progesterone--forty years ago.  [electronic resource] 

 -  American journal of obstetrics and gynecology  Sep 1974 
 - 137-41 p.  digital 
<br/><br/> Publication Type: Historical Article; Journal Article 
<br/><br/><label>ISSN: </label>0002-9378 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Acetylation<br/>Animals<br/>Chemistry<br/>Endocrinology--history<br/>Female<br/>Germany<br/>History, 20th Century<br/>Hot Temperature<br/>Methods<br/>Poland<br/>Progesterone--isolation & purification<br/>Swine