Walther, David Philippe., <br/><br/>
Orthodontic notes 
by D. P. Walther. 
 - Bristol  John Wright  1967 
 - 219 pages. :   illustrations. ;   18 cm. 
<br/><br/>p. 203-206 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Orthodontia