Somadio <br/><br/>
Ukuran sudut  [microform] / 
Somadio 
 - Surabaya :  Penerbit Universitas Airlangga,  1960 
 - 1 microfiche :  positive ;  11 x 15 cm. 
<br/><br/> Bahan IDC (Inter Documentation Company)  Modern Indonesia Project : Monographs