De Nava, Mark Edgar A., <br/><br/>
Automated perlite expander / 
Mark Edgar A. De Nava, Virgilio R. Ogtip, Christian Zarr I. Sertan 
 - Nabua, Camarines sur :  Camarines sur Polytechnic Colleges ;  2014. 
 - 51 leaves 
<br/><br/>Undergraduate Thesis (BSECE) - Electronics Engineering