Selvadurai S. <br/><br/>
Padi survey :  Sungai Manik and Changkat Jong Irrigation Areas, Perak / 
by S. Selvadurai 
 - 81 pages :  illustrations, maps ;  32 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rice--Malaysia--Perak.<br/>Agriculture--Economic aspects--Malaysia--Perak
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Perak--Rural condit.