Design, fabrication and evaluation of hollow blocks making machine / 
Rey John P. Crisologo, Samuel B. Francisco, Isagany B. Talla   
 - City of BatAC :  MMSU,   2017. 
 - xi, 46  leaves :  photos ;  28 cm. 
<br/><br/> Thesis (BS in Mechanical Engineering) -- Mariano Marcos State University - College of Engineering, Batac City  2017. 
<br/><br/>Bibliography : leaf 30.