Rüsch, J P <br/><br/>
The dynamic extraoral force analyser (DEFA).  [electronic resource] 

 -  Report of the congress. European Orthodontic Society  1970 
 - 583-9 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dental Stress Analysis<br/>Orthodontic Appliances--standards