Perry, Dorothy A. <br/><br/>
Periodontology for the Dental Hygienist, 4th Edition 

 - 4th ed. 
 - Misouri  Elsevier  2014 
 - XII, 339p.  Paperback  28 cm 
<br/><br/><label>ISBN: </label>9781455703692 
<br/><br/><label>Dewey Class. No.: </label>617.637