Risalah-risalah penelitian, 1966. 

 - Djakarta,  Badan Pimpinan Umum Perusahaan Perkebunan Karet Negara  [1967] 
 - 110 p.  33 cm. 
<br/><br/> Cover title. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>LCCN: </label>sa 68020387  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hevea.<br/>Rubber.
<br/><br/><label>LC Class. No.: </label>SB291.H4  / R57