Nuhay, Rosemarie C., <br/><br/>
Portable heartbeat monitoring device/ 
Rosemarie C. Nuhay, May S. Oliveros, 
 - Nabua, Camarines Sur :  Camarines Sur Polytechnic Colleges ;  2003. 
 - 67 leaves 
<br/><br/>Undergraduate Thesis (BSECE) - Electronics Engineering