Primary preventive dentistry / 
edited by Norman O. Harris and Arden G. Christen. 
 - [Place of publication not identifed] :  [publisher not identified],  c1982 
<br/><br/><label>ISBN: </label>835956024 
<br/><br/><label>LC Class. No.: </label>RK 60.7 .H31 1982