Solar powered coin-activated charging system/
Cruz, Ronaldo Jr. E.,
Solar powered coin-activated charging system/ Ronaldo E. Cruz Jr., Richard A. Lomeda, Jeffrey Z. Reginales - Nabua, Camarines Sur : Camarines sur Polytechnic Colleges ; 2015. - 64 leaves
Undergraduate Thesis (BSEE) - Electrical Engineering
Solar powered coin-activated charging system/ Ronaldo E. Cruz Jr., Richard A. Lomeda, Jeffrey Z. Reginales - Nabua, Camarines Sur : Camarines sur Polytechnic Colleges ; 2015. - 64 leaves
Undergraduate Thesis (BSEE) - Electrical Engineering