Sarmiento, Raymond O. <br/><br/>
Design, fabrication and evaluation of mechanical rice weeder for rain-fed upland rice culture  [manuscript] / 
Raymond O. Sarmiento. 
 - Magalang, Pampanga :  Pampanga Agricultural College,  2014. 
 - xvii, 56 pages :  illustrations ;  27 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rice weeder.