Betervo, Abigail L., <br/><br/>
Solar cellular phone battery charger/ 
Abigail L. Betervo, Dhomenic V. Nuęz, Simeon A. Rase II 
 - Nabua, Camarines Sur :  Camarines sur Polytechnic Colleges ;  2007. 
 - 69 leaves. 
<br/><br/>Undergraduate Thesis (BSECE) - Electronics Engineering