Bibliography of ground covers, green manuring and soil improvement of rubber / 
Library, Rubber Research Institute of Malaya 
 - 20 pages  :  26 cm. 
 - RRIM Library bibliography ;  no.28 .
 - RRIM Library bibliography ;  no.28 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil analysis--Malaysia<br/>Rubber--Bibliography--Malaysia