Salvador, Rhuffy H. <br/><br/>
Farm management practices and determination of organophosphorus pesticide residues in selected vegetables from Magalang, Pampanga farms  [manuscript] / 
Rhuffy Hipolito Salvador. 
 - Magalang, Pampanga :  Pampanga State Agricultural University,  2016. 
 - xvii, 105 leaves ;  28 cm. + 1 CD.