Vicencio, Karel Jell S. <br/><br/>
Kangkong (Ipomoea aquatica) as bioindicator of heavy metals  [manuscript] / 
Karel Jell S. Vicencio. 
 - Magalang, Pampanga :  Pampanga State Agricultural University,  2015. 
 - xiv; 69 pages + CD ;  28 cm.