Kratschmar, A <br/><br/>
[An ergonomic instruction sheet for orthodontic appliances].  [electronic resource] 

 -  Die Quintessenz  May 1974 
 - 93-5 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0033-6580 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Health Education, Dental<br/>Orthodontic Appliances