Spector, K B <br/><br/>
How to design a direct mail envelope.  [electronic resource] 

 -  Dental lab management today  Jan 1988 
 - 16-7 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>8750-9539 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Advertising<br/>Laboratories, Dental