Drakard, Jane. <br/><br/>
A Malay frontier :  unity and duality in a Sumatran kingdom / 
Jane Drakard. 
 - Ithaca, New York :  Southeast Asia Program, Cornell University,  1990. 
 - ix, 205 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0877277060  RM60.30 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Barus (Kingdom)--Politics and government.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Sumatra Utara (Indonesia)--Ethnic relations.