Abonal, Jiffy P., <br/><br/>
Concrete chipping machine/ 
Jiffy P. Abonal, Rene T. Ocampo, Garry A. Villareal 
 - Nabua, Camarines Sur :  Camarines Sur Polytechnic Colleges ;  2006. 
 - 54 leaves. 
<br/><br/>Undergraduate Thesis (BSME) - Mechanical Engineering