Post, Hans. <br/><br/>
Bandjir over Noor-Sumatra  [microform] / 
Hans Post. 
 - Medan :  Pax,  [n.d.] 
 - 7 microfiches ;  positive ;  11 X 15 cm. 
<br/><br/> Bahan IDC (Inter Documentation Company).  Modern Indonesia Project : Monographs.