Nucup, Daniel M. <br/><br/>
Growth and Yield of Sweet Potato (Ipomea batatas L.) as Influenced by Levels of Potassium  [manuscript] / 
Daniel M. Nucup. 
 - Magalang, Pampanga :  Pampanga State Agricultural University,  2019. 
 - ix; 69 leaves + CD ;  28 cm.