Improvement of the downdraft gasifier / 
Mark Jayson Castro, Orylle John M. De La Cruz, Farl Jay C. Mariano, Marc Dann O. Miguel 
 - City of Batac :  MMSU,  2017. 
 - xiii, 70 leaves :  photos ;  28 cm. 
<br/><br/> Thesis (BS in Mechanical Engineering) -- Mariano Marcos State University - College of Engineering, Batac City  
<br/><br/>Bibliography : leaf 50.