TY  - BOOK
AU  - Villanueva, Rene O.
TI  - Kung paano nagkaroon ng liwanag=how light came about: Rene O. Villanueva; 
SN  - 9715181303  
U1  - KID V712kun 2007 
PY  - 2007///.
CY  - Manila
PB  - Lampara Publishing House
ER  -