Wrathall, A E <br/><br/>
Seasonal variations in serum progesterone levels in pregnant sows.  [electronic resource] 

 -  The Veterinary record  Jun 1986 
 - 685-7 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0042-4900 
<br/><br/><label>Standard No.: </label>10.1136/vr.118.25.685  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Female<br/>Pregnancy<br/>Pregnancy, Animal<br/>Progesterone--blood<br/>Seasons<br/>Swine--blood