Urograph for urea nitrogen determinations.  [electronic resource] 

 -  The Medical letter on drugs and therapeutics  Mar 1967 
 - 20 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0025-732X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Blood Urea Nitrogen--instrumentation<br/>Humans