Baer, Paul N. <br/><br/>
Textbook of periodontics / 
Paul N.Baer 
 - [Place of publication not identifed] :  [publisher not identified],  c1977 
<br/><br/><label>ISBN: </label>397520808 
<br/><br/><label>LC Class. No.: </label>RK 361 .B27 1977