Ringen, Catherine O.  1943- <br/><br/>
Vowel harmony  theoretical implications /  [microform] : 
by Catherine Oleson Ringen 
 - Ann Arbor, Mich. :  University Microfilms International,  1975 
 - 1 microfilm reel :  positive ;  35 mm. 
<br/><br/>Thesis (Ph.D.) - Indiana University, 1975 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Grammar, Comparative and general--Vowel harmony