Ramfjord, Sigurd Peder, 1911- <br/><br/>
Periodontology and periodontics / 
Sigurd Peder Ramfjord 
 - [Place of publication not identifed] :  [publisher not identified],  c1979 
<br/><br/> Periodontology and periodontics, Periodontology 
<br/><br/><label>ISBN: </label>721674607 
<br/><br/><label>LC Class. No.: </label>RK 361 .R36 1979