Pena, Kimberly M. <br/><br/>
Macronutrient analysis of selected legume leaves: its implications to morpho-physiology of pechay (Brassica chinensis L.)  [manuscript] / 
Kimberly M. Pena. 
 - Magalang, Pampanga :  Pampanga State Agricultural University,  2019. 
 - xiii; 68 pages + CD ;  28 cm.