Agriculture Monthly: :  hydroponics is profitable: even a small space can produce good income / 
Zac B. Sarian. 
 - Manila :  Manila Bulletin,  Jy.2019. 
 - 65 pages ;  30cm. 
 - Monthly agriculture ;  Vol.23, No.7 .
<br/><br/> Oldest Thai seed company is newest player in the PH--Former police officer is now a square advocate.