Padolina, Ma. Cristina D. <br/><br/>
Chemistry for the 21st century / 
Ma. Cristina D. Padolina, Veronica C. Sabularse, Leah A. Marquez. 
 - Makati City :  Diwa Scholastic Press Inc,  1995. 
 - 343 pages :  Illustration ;  25 cm.