Koren, K <br/><br/>
Manual on radiation protection in hospitals and general practice : Volume 4  radiation protection in dentistry 

 - Geneva  WHO  1977 
 - 52 p.  Illustration 
<br/><br/><label>ISBN: </label>9241540419 
<br/><br/><label>Dewey Class. No.: </label>363.189  / K56