Percival, W. Keith,  1930- <br/><br/>
A grammar of Toba-Batak  [microform] / 
by W. Keith Percival. 
 - Ann Arbor, Mich. :  University Microfilms International,  1970. 
 - 1 microfilm reel :  positive ;  35 mm. 
<br/><br/>Thesis (Ph.D.) - Yale University, 1964. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Toba--Batak dialect--Grammar.