Sistan ekonomi tradisional daerah Riau 
Yulifar...[et al];ed.by Rifai Abu...[et al] 
 - Jakarata  Deptt.of Education and Culture  1984 
 - 121p.  ill.  22cm 
<br/><br/> Bib.:p.118-19;includes index 
<br/><br/><label>Subjects--Index Terms: </label>Riau (Indonesia)-Economic conditions 
<br/><br/><label>Dewey Class. No.: </label>330.9598  / YUL