Paras, Richard C. <br/><br/>
The potential of squash (Cucurbita maxima) seed ethanolic extract and zinc sulfate in inducing masculinization of nile tilapia (Oreochromis niloticus L.)  [manuscript] 
Richard C. Paras 
 - Magalang, Pampanga  Pampanga State Agricultural University  2018 
 - xiii, 71 leaves + CD  28 cm