Follero, Glenn T., <br/><br/>
Six-digit electronic lock/ 
Glenn T. Follero, Abigail H. Penales, Luis Paelo C. Ramboyong 
 - Nabua, Camarines Sur :  Camarines Sur Polythectic Colleges ;         2008. 
 - 39 leaves. 
<br/><br/>Undergraduate Thesis (BSECE) - Electronics Engineering