LEFKOWITZ, W <br/><br/>
The effect of urea and diammonium phosphate on the pH of the tooth surface.  [electronic resource] 

 -  The New York state dental journal  Apr 1951 
 - 159-63; p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0028-7571 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dentifrices<br/>Hydrogen-Ion Concentration<br/>Phosphates<br/>Tooth<br/>Urea