Pena, Phoebe P. <br/><br/>
Complementary Upward and Downward Led Lighting on the Growth of Romaine Lettuce in Snap Hydroponic Set-up  [manuscript] / 
Phoebe P. Pena. 
 - Magalang, Pampanga :  Pampanga State Agricultural University,  August 2022. 
 - xvi, 70 leaves ;  28 cm. + 1 computer disc (4 3/4 in.) 
<br/><br/>PENA, PHOEBE P., Depertment of Resource Engineering and Agricultural Mechamzation, College of Engineering and Computer Studies, Pampangs State Agricultural University, Magalang, Pampanga. August 2022. "Complementary