Riau 

 - Jakarta  Yayasan Bhakti Wawasan Nusantara  1992 
 - 423 p. : ill. ; 24 cm. 
 - Profil propinsi republik Indonesia .
<br/><br/><label>ISBN: </label>9798399005  RM100581566 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Riau (Indonesia)--Description and travel